Regional Migration Forecast: 5-12 May 2017

Blackpoll Warbler. Don Martin/Macaulay Library. eBird S36477674.

Continental Summary

Favorable migration conditions early in the period bring light moderate flights to many areas of the West away from the Pacific Coast that will feature Dusky Flycatcher, Cedar Waxwing, Yellow-breasted Chat, Bullock’s Oriole, Chipping Sparrow, while the East will see locally moderate to very heavy flights featuring Short-billed Dowitcher, Black Tern, Red-headed Woodpecker, Olive-sided Flycatcher, Eastern Kingbird, Swainson’s Thrush, Canada Warbler, Common Yellowthroat, and Orchard Oriole in mostly marginal migration conditions that in many areas will hinder or inhibit migration. The second half of the period will see the best chance for more trans-Gulf migration as well as another opportunity for fallouts and concentrations with a passing frontal boundary.

Arrows show wind speed and direction (arrow points in the direction to which wind is blowing) 100 m above ground level. Areas with southerly winds are colored red; northerly winds colored blue. Accumulated precipitation (in 6 hour intervals) is green, outlined by white. Broadly speaking, areas of the map in red will experience conditions that are favorable for migration, and areas where red and green (and red and blue) intersect and overlap may experience migrant concentrations and fallouts as migrants interact with precipitation.

We use data collected by eBird users help make more accurate forecasts. If you enjoy the predictions contained in these posts, please consider submitting your own bird sightings to eBird to even further improve the content. Every observation counts, whether it be a single bird at a feeder in your backyard, or an entire day spent in a national park. To get started with eBird, head on over to the site!

Please note that photographs and other digital media showing birds come from the Macaulay Library, which receives credit along with the photographer/observer in the media caption as part of a new initiative that allows public contribution, access and use of natural history media.

Finally, and new for Spring 2017, our friend Kyle Horton of the Radar Aeroecology Lab at Oklahoma University created a new set of images depicting spring bird movements in the Gulf of Mexico region as part of an analysis that he is leading as part of our ongoing collaboration. This feature appears in the Gulf Coast and Southeast region forecast.

Need a review of our definitions for regions, species on the move, and migration amounts? Please visit this link.

Quick Links to Regions

Upper Midwest and NortheastBirdCast Upper Midwest and Northeast Region Gulf Coast and SoutheastBirdCast Upper Southeast Region
Great Plainsbirdcast_plains West
BirdCast West Region

Upper Midwest and Northeast

The first half of the period will see localized pockets of marginal to favorable migration conditions mostly along the immediate coast and New England, where light to locally heavy movements will occur. Those with an interest in flight calls should consider listening during these periods if movements are occurring, as low visibility in conjunction with artificial lighting can inspire significant calling activity. The extent and intensity of these early period movements will be determined largely by the extent of precipitation and speed of unfavorable winds aloft. Birders in these areas should also be watchful for some migrant overshoots, birds entrained in the passing low pressure system (see our brief discussion here). The latter half of the period will see even more restricted movements, as generally unfavorable conditions build into the region, including opposing winds and unseasonably cool temperatures. Note, however, that subtle changes in these factors, especially calmer than expected wind conditions, can allow significantly higher intensity movements to occur.

Birders in New England and the Canadian Maritimes should watch carefully as atmospheric circulation across the North Atlantic is forecast to begin to change markedly, with more easterly flow forecast in the coming week. This could lead to the arrival of European Golden-Plover, Black-tailed Godwit, and other European vagrants in these areas.

Dunlin. Dennis Swaby/Macaulay Library. eBird S36525002.

Species on the Move

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Black-crowned Night-Heron * 3/27 5/8 5/20 5/29 6/1
Eastern Kingbird ****! 4/25 5/5 5/21 6/1 6/11
Ruby-throated Hummingbird ****! 4/27 5/7 5/22 5/31 6/5
Common Yellowthroat ****! 4/27 5/5 5/20 5/25 6/2
Indigo Bunting ****! 4/27 5/6 6/22 6/25 After Jun 30
Least Sandpiper *** 4/28 5/7 5/16 5/26 6/2
Acadian Flycatcher *** 4/28 5/6 6/2 6/16 After Jun 30
Northern Parula ****! 4/28 5/6 5/11 5/17 5/25
Black-throated Blue Warbler ****! 4/28 5/6 5/11 5/16 5/24
Lincoln's Sparrow *** 4/28 5/6 5/10 5/20 5/26
Scarlet Tanager ****! 4/28 5/7 5/14 5/24 After Jun 30
Least Flycatcher ****! 4/29 5/5 5/13 5/24 5/31
Veery ****! 4/29 5/5 5/15 5/31 6/3
Blackburnian Warbler ****! 4/29 5/7 5/13 5/24 5/31
Bobolink *** 4/29 5/6 6/8 6/22 After Jun 30
Yellow-billed Cuckoo *** 4/30 5/8 5/30 6/4 6/18
Red-eyed Vireo ****! 4/30 5/9 5/27 6/1 6/5
Golden-winged Warbler *** 5/1 5/6 5/11 5/19 5/24
American Redstart ****! 5/1 5/7 5/16 5/24 6/4
Black-billed Cuckoo *** 5/2 5/10 5/26 6/3 6/11
Tennessee Warbler ****! 5/2 5/8 5/15 5/23 5/27
Chestnut-sided Warbler ****! 5/2 5/7 5/14 5/24 6/1
Common Tern *** 5/3 5/8 5/18 6/1 6/5
Cape May Warbler ****! 5/3 5/7 5/12 5/19 5/22
Magnolia Warbler ****! 5/3 5/7 5/15 5/23 5/29
Semipalmated Plover *** 5/4 5/8 5/22 5/31 6/5
Eastern Wood-Pewee ****! 5/4 5/11 5/27 6/1 6/26
Gray-cheeked Thrush *** 5/4 5/8 5/15 5/22 5/31
Swainson's Thrush ****! 5/4 5/8 5/14 5/24 5/31
Dunlin *** 5/5 5/8 5/21 5/29 6/4
Short-billed Dowitcher *** 5/5 5/11 5/17 5/28 6/2
Black Tern *** 5/5 5/10 5/18 5/25 6/25
Common Nighthawk *** 5/5 5/8 5/21 5/31 6/3
Philadelphia Vireo *** 5/5 5/9 5/19 5/26 5/31
Bay-breasted Warbler ****! 5/5 5/9 5/14 5/21 5/28
Wilson's Warbler ****! 5/5 5/9 5/16 5/26 5/31
Semipalmated Sandpiper *** 5/6 5/15 5/25 6/3 6/11
Blackpoll Warbler ****! 5/6 5/11 5/19 5/25 6/1
Herring Gull ** 5/7 5/11 5/18 6/3 6/9
Mourning Warbler *** 5/7 5/18 5/23 5/30 6/2
Olive-sided Flycatcher *** 5/8 5/18 5/22 5/29 6/3
Cedar Waxwing ****! 5/8 5/20 5/31 6/23 6/25
Canada Warbler ****! 5/8 5/11 5/20 5/27 5/31
Willow Flycatcher ****! 5/11 5/19 5/29 6/16 6/26

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Red-winged Blackbird *** 3/2 3/9 5/6 5/28 6/25
Common Grackle *** 3/4 3/10 5/19 6/24 After Jun 30
Great Blue Heron *** 3/9 3/22 5/12 5/30 6/7
Great Egret *** 3/23 3/31 5/12 5/29 6/3
Tree Swallow *** 3/28 4/1 5/7 6/24 6/26
Vesper Sparrow * 3/28 4/6 6/11 6/19 6/22
Purple Martin ** 3/29 4/11 5/17 6/1 6/8
Forster's Tern ** 4/1 4/12 5/10 5/22 6/4
Savannah Sparrow *** 4/4 4/13 5/6 5/24 6/21
Sora ** 4/11 4/20 5/8 5/20 5/29
Prothonotary Warbler ** 4/12 4/20 5/11 5/17 5/22
Barn Swallow *** 4/5 4/24 5/19 5/29 6/6
Yellow-rumped Warbler ****! 4/8 4/24 5/5 5/18 5/23
Cliff Swallow ** 4/16 4/25 5/17 5/27 5/31
Kentucky Warbler ** 4/20 4/25 5/9 6/28 After Jun 30
Green Heron *** 4/16 4/26 5/9 5/14 6/2
Blue-headed Vireo *** 4/18 4/26 5/5 5/14 5/21
Chimney Swift *** 4/19 4/27 5/19 6/4 6/18
Bank Swallow *** 4/18 4/27 5/16 5/27 6/5
Yellow-breasted Chat * 4/22 4/27 6/12 After Jun 30 -
Summer Tanager *** 4/20 4/27 5/8 5/18 5/22
Spotted Sandpiper *** 4/22 4/28 5/16 5/28 6/2
Orchard Oriole *** 4/22 4/28 5/12 5/26 5/29
Red-headed Woodpecker ** 4/20 4/29 5/8 5/13 6/18
House Wren ****! 4/18 4/29 5/10 5/15 5/26
Solitary Sandpiper *** 4/23 4/30 5/7 5/17 5/23
Wood Thrush ****! 4/25 4/30 5/12 5/24 6/1
Gray Catbird ****! 4/26 4/30 5/13 5/24 6/2
Northern Waterthrush *** 4/24 4/30 5/11 5/20 5/27
Blue-winged Warbler *** 4/24 4/30 5/7 5/12 6/27
Orange-crowned Warbler *** 4/26 4/30 5/8 5/19 5/24
Yellow Warbler ****! 4/24 4/30 5/14 5/31 6/26
Grasshopper Sparrow ** 4/19 4/30 6/10 After Jun 30 -
White-crowned Sparrow ****! 4/27 4/30 5/8 5/19 5/23
Nashville Warbler ****! 4/27 5/1 5/8 5/19 5/24
Black-throated Green Warbler ****! 4/25 5/1 5/10 5/16 5/26
Clay-colored Sparrow * 4/27 5/1 5/19 5/27 After Jun 30
Rose-breasted Grosbeak ****! 4/27 5/1 5/10 5/22 5/27
Warbling Vireo *** 4/25 5/2 5/18 5/24 6/25
Ovenbird ****! 4/26 5/2 5/11 5/16 5/31
Black-and-white Warbler ****! 4/24 5/2 5/9 5/17 5/25
Great Crested Flycatcher ****! 4/25 5/3 5/22 6/12 6/27
Yellow-throated Vireo *** 4/23 5/3 5/11 5/22 6/19
Marsh Wren ** 4/25 5/3 5/23 5/30 6/2
Baltimore Oriole ****! 4/28 5/3 5/12 5/24 6/26
Sedge Wren * 4/23 5/4 6/10 6/29 After Jun 30
Least Flycatcher *** 4/29 5/5 5/13 5/24 5/31
Eastern Kingbird ****! 4/25 5/5 5/21 6/1 6/11
Veery ****! 4/29 5/5 5/15 5/31 6/3
Common Yellowthroat ****! 4/27 5/5 5/20 5/25 6/2
Acadian Flycatcher *** 4/28 5/6 6/2 6/16 After Jun 30
Golden-winged Warbler *** 5/1 5/6 5/11 5/19 5/24
Northern Parula ****! 4/28 5/6 5/11 5/17 5/25
Black-throated Blue Warbler ****! 4/28 5/6 5/11 5/16 5/24
Lincoln's Sparrow *** 4/28 5/6 5/10 5/20 5/26
Indigo Bunting *** 4/27 5/6 6/22 6/25 After Jun 30
Bobolink ** 4/29 5/6 6/8 6/22 After Jun 30
Least Sandpiper *** 4/28 5/7 5/16 5/26 6/2
Ruby-throated Hummingbird *** 4/27 5/7 5/22 5/31 6/5
American Redstart ****! 5/1 5/7 5/16 5/24 6/4
Cape May Warbler *** 5/3 5/7 5/12 5/19 5/22
Magnolia Warbler ****! 5/3 5/7 5/15 5/23 5/29
Blackburnian Warbler *** 4/29 5/7 5/13 5/24 5/31
Chestnut-sided Warbler ****! 5/2 5/7 5/14 5/24 6/1
Scarlet Tanager ****! 4/28 5/7 5/14 5/24 After Jun 30
Black-crowned Night-Heron * 3/27 5/8 5/20 5/29 6/1
Semipalmated Plover *** 5/4 5/8 5/22 5/31 6/5
Dunlin *** 5/5 5/8 5/21 5/29 6/4
Common Tern *** 5/3 5/8 5/18 6/1 6/5
Yellow-billed Cuckoo *** 4/30 5/8 5/30 6/4 6/18
Common Nighthawk *** 5/5 5/8 5/21 5/31 6/3
Gray-cheeked Thrush *** 5/4 5/8 5/15 5/22 5/31
Swainson's Thrush ****! 5/4 5/8 5/14 5/24 5/31
Tennessee Warbler *** 5/2 5/8 5/15 5/23 5/27
Philadelphia Vireo ** 5/5 5/9 5/19 5/26 5/31
Red-eyed Vireo ****! 4/30 5/9 5/27 6/1 6/5
Bay-breasted Warbler *** 5/5 5/9 5/14 5/21 5/28
Wilson's Warbler ****! 5/5 5/9 5/16 5/26 5/31
Black Tern ** 5/5 5/10 5/18 5/25 6/25
Black-billed Cuckoo ** 5/2 5/10 5/26 6/3 6/11
Short-billed Dowitcher *** 5/5 5/11 5/17 5/28 6/2
Herring Gull * 5/7 5/11 5/18 6/3 6/9
Eastern Wood-Pewee ****! 5/4 5/11 5/27 6/1 6/26
Blackpoll Warbler ****! 5/6 5/11 5/19 5/25 6/1
Canada Warbler *** 5/8 5/11 5/20 5/27 5/31

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Bald Eagle * 3/5 3/7 3/10 5/28 6/7
Song Sparrow ** 3/7 3/13 4/10 5/10 6/24
Belted Kingfisher *** 3/28 4/7 4/16 5/6 5/12
Pectoral Sandpiper * 3/20 3/29 4/18 5/23 6/5
Northern Flicker *** 3/30 4/8 4/18 5/9 5/15
Hermit Thrush *** 4/2 4/6 4/19 5/7 5/11
Double-crested Cormorant *** 3/19 4/1 4/20 5/30 6/7
Ruby-crowned Kinglet *** 4/6 4/11 4/24 5/8 5/13
Pine Warbler *** 3/31 4/9 4/24 5/8 5/15
Sharp-shinned Hawk ** 3/27 4/10 4/26 5/7 5/17
Cooper's Hawk ** 3/15 4/6 4/26 5/11 5/25
Broad-winged Hawk *** 4/9 4/14 4/26 5/6 5/10
Greater Yellowlegs *** 3/25 4/13 4/26 5/19 5/29
Caspian Tern * 4/1 4/9 4/28 5/20 6/4
Field Sparrow *** 3/30 4/9 4/28 5/9 6/18
White-throated Sparrow *** 4/8 4/17 4/28 5/9 5/18
Louisiana Waterthrush ** 3/29 4/6 4/30 5/14 6/17
Northern Rough-winged Swallow *** 3/31 4/16 5/1 5/20 5/29
Brown Thrasher *** 4/4 4/11 5/1 5/9 5/13
Swamp Sparrow *** 4/3 4/11 5/2 5/9 5/25
Eastern Towhee *** 4/3 4/15 5/2 5/9 5/16
Chipping Sparrow *** 4/1 4/11 5/3 5/10 5/14
Brown-headed Cowbird *** 3/11 4/6 5/3 5/11 After Jun 30
Lesser Yellowlegs *** 3/28 4/14 5/4 5/18 5/26
White-eyed Vireo *** 4/11 4/23 5/4 5/13 5/21
Blue-gray Gnatcatcher *** 4/5 4/16 5/4 5/11 5/29
Palm Warbler *** 4/3 4/25 5/4 5/19 5/23
Blue-headed Vireo *** 4/18 4/26 5/5 5/14 5/21
Yellow-rumped Warbler *** 4/8 4/24 5/5 5/18 5/23
Savannah Sparrow ** 4/4 4/13 5/6 5/24 6/21
Red-winged Blackbird *** 3/2 3/9 5/6 5/28 6/25
Solitary Sandpiper *** 4/23 4/30 5/7 5/17 5/23
Tree Swallow *** 3/28 4/1 5/7 6/24 6/26
Blue-winged Warbler *** 4/24 4/30 5/7 5/12 6/27
Sora ** 4/11 4/20 5/8 5/20 5/29
Red-headed Woodpecker * 4/20 4/29 5/8 5/13 6/18
Orange-crowned Warbler *** 4/26 4/30 5/8 5/19 5/24
Nashville Warbler *** 4/27 5/1 5/8 5/19 5/24
White-crowned Sparrow *** 4/27 4/30 5/8 5/19 5/23
Summer Tanager ** 4/20 4/27 5/8 5/18 5/22
Green Heron ** 4/16 4/26 5/9 5/14 6/2
Black-and-white Warbler *** 4/24 5/2 5/9 5/17 5/25
Kentucky Warbler * 4/20 4/25 5/9 6/28 After Jun 30
Forster's Tern ** 4/1 4/12 5/10 5/22 6/4
House Wren *** 4/18 4/29 5/10 5/15 5/26
Black-throated Green Warbler *** 4/25 5/1 5/10 5/16 5/26
Lincoln's Sparrow *** 4/28 5/6 5/10 5/20 5/26
Rose-breasted Grosbeak *** 4/27 5/1 5/10 5/22 5/27
Yellow-throated Vireo ** 4/23 5/3 5/11 5/22 6/19
Ovenbird *** 4/26 5/2 5/11 5/16 5/31
Northern Waterthrush *** 4/24 4/30 5/11 5/20 5/27
Golden-winged Warbler ** 5/1 5/6 5/11 5/19 5/24
Prothonotary Warbler ** 4/12 4/20 5/11 5/17 5/22
Northern Parula *** 4/28 5/6 5/11 5/17 5/25
Black-throated Blue Warbler *** 4/28 5/6 5/11 5/16 5/24
Great Blue Heron ** 3/9 3/22 5/12 5/30 6/7
Great Egret *** 3/23 3/31 5/12 5/29 6/3
Wood Thrush *** 4/25 4/30 5/12 5/24 6/1
Cape May Warbler *** 5/3 5/7 5/12 5/19 5/22
Orchard Oriole *** 4/22 4/28 5/12 5/26 5/29
Baltimore Oriole *** 4/28 5/3 5/12 5/24 6/26

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Horned Lark * - - Before Mar 1 3/15 After Jun 30
American Woodcock * 3/5 3/10 3/16 3/22 5/30
Killdeer * 3/2 3/8 4/1 4/9 6/5
Lesser Scaup *** 3/2 3/6 3/25 4/10 5/8
Red-breasted Merganser *** 3/2 3/6 3/21 4/12 5/11
Eastern Phoebe *** 3/12 4/1 4/10 4/14 6/2
Horned Grebe *** 3/2 3/12 3/25 4/15 5/9
Bufflehead *** 3/2 3/9 3/30 4/17 5/9
Bonaparte's Gull *** 3/15 4/1 4/11 4/20 5/5
Common Loon ** 3/17 3/26 4/12 4/22 6/4
Brown Creeper *** 3/29 4/3 4/10 4/23 5/8
Winter Wren ** 3/29 4/4 4/13 4/23 5/11
Northern Shoveler *** 3/2 3/9 4/3 4/28 5/8
Pied-billed Grebe *** 3/8 3/20 4/10 4/28 5/7
Northern Harrier ** 3/18 3/28 4/6 4/28 5/9
Ruddy Duck *** 3/2 3/10 4/1 4/29 5/8
American Coot *** 3/2 3/7 4/4 4/29 5/21
Wilson's Snipe *** 3/10 4/4 4/13 4/29 5/10
American Kestrel *** 3/17 3/27 4/10 4/29 5/9
Blue-winged Teal *** 3/14 3/31 4/19 4/30 5/10
Green-winged Teal *** 3/2 3/10 4/2 4/30 5/11
Osprey *** 3/15 4/1 4/20 5/1 5/8
Yellow-throated Warbler ** 4/1 4/8 4/26 5/2 5/19
Rusty Blackbird *** 3/7 3/11 4/9 5/4 5/11
Purple Finch *** 4/1 4/13 4/25 5/4 5/11
Broad-winged Hawk *** 4/9 4/14 4/26 5/6 5/10
Belted Kingfisher *** 3/28 4/7 4/16 5/6 5/12
Sharp-shinned Hawk *** 3/27 4/10 4/26 5/7 5/17
Hermit Thrush *** 4/2 4/6 4/19 5/7 5/11
Ruby-crowned Kinglet *** 4/6 4/11 4/24 5/8 5/13
Pine Warbler *** 3/31 4/9 4/24 5/8 5/15
Northern Flicker *** 3/30 4/8 4/18 5/9 5/15
Brown Thrasher *** 4/4 4/11 5/1 5/9 5/13
Field Sparrow * 3/30 4/9 4/28 5/9 6/18
White-throated Sparrow *** 4/8 4/17 4/28 5/9 5/18
Swamp Sparrow *** 4/3 4/11 5/2 5/9 5/25
Eastern Towhee *** 4/3 4/15 5/2 5/9 5/16
Chipping Sparrow *** 4/1 4/11 5/3 5/10 5/14
Song Sparrow * 3/7 3/13 4/10 5/10 6/24
Cooper's Hawk *** 3/15 4/6 4/26 5/11 5/25
Blue-gray Gnatcatcher *** 4/5 4/16 5/4 5/11 5/29
Brown-headed Cowbird *** 3/11 4/6 5/3 5/11 After Jun 30
Blue-winged Warbler *** 4/24 4/30 5/7 5/12 6/27

Gulf Coast and Southeast

With a strong frontal boundary departing the region to kick off the weekend, most of the region east of the Mississippi River will experience a relative dearth of birds for the first half of the period. Light to locally moderate movements will be the norm, although heavier than expected flights may occur in calmer conditions, particularly in Florida and the southeast. To the west of the Mississippi River, conditions are more favorable, with moderate to heavy flights likely, increasingly so, through the first half of the period. By Wednesday the entire region begins to experience more favorable conditions, with moderate to heavy flights widespread in the region and trans-Gulf movements in full swing. The period ends with another frontal passage with potential to produce more fallouts and concentrations, particularly in the eastern Gulf region.

Canada Warbler. Dan Vickers/Macaulay Library. eBird S36415926.

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Yellow-billed Cuckoo *** 4/11 5/9 6/6 6/12 After Jun 30
Canada Warbler ** 4/13 5/7 5/13 5/20 5/25
Olive-sided Flycatcher ** 4/20 5/8 5/12 5/17 6/2
Mourning Warbler ** 4/24 5/9 5/13 5/20 5/26
Black Tern *** 5/9 5/11 5/15 5/20 5/23
Yellow-bellied Flycatcher *** 5/9 5/11 5/15 5/19 5/22

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Purple Martin ** 3/16 3/22 6/22 After Jun 30 -
Scissor-tailed Flycatcher *** 3/16 3/26 5/12 5/30 After Jun 30
Chimney Swift *** 3/23 4/2 5/11 5/25 5/29
Cliff Swallow *** 3/12 4/4 5/12 5/20 6/17
Ash-throated Flycatcher * 3/15 4/6 5/24 5/31 6/3
Red-eyed Vireo *** 4/1 4/15 5/12 5/24 After Jun 30
Bullock's Oriole * 4/5 4/17 5/24 5/31 After Jun 30
Semipalmated Sandpiper ** 3/29 4/18 5/14 5/31 6/9
Yellow-breasted Chat ** 4/11 4/18 6/7 6/24 After Jun 30
Common Nighthawk *** 4/11 4/20 5/14 6/13 After Jun 30
Great Crested Flycatcher *** 3/28 4/20 5/8 6/9 After Jun 30
Western Kingbird *** 4/7 4/20 5/10 5/30 6/2
Spotted Sandpiper *** 4/12 4/22 5/5 5/20 5/26
Acadian Flycatcher ** 4/13 4/23 6/5 6/16 After Jun 30
Mississippi Kite *** 4/17 4/24 5/7 5/22 5/26
Eastern Wood-Pewee *** 4/14 4/24 5/12 5/22 5/26
Eastern Phoebe *** 4/23 4/26 5/8 After Jun 30 -
Magnolia Warbler *** 4/21 4/26 5/11 5/16 5/20
Blackburnian Warbler ** 4/13 4/26 5/11 5/16 5/21
American Robin *** 4/23 4/28 5/7 5/23 After Jun 30
American Redstart *** 4/13 4/29 5/10 5/16 5/23
White-rumped Sandpiper *** 4/21 4/30 5/14 5/20 6/13
Least Flycatcher *** 4/24 4/30 5/12 5/19 5/23
Wilson's Warbler *** 4/20 4/30 5/11 5/19 5/23
Canada Warbler *** 4/13 5/7 5/13 5/20 5/25
Olive-sided Flycatcher * 4/20 5/8 5/12 5/17 6/2
Yellow-billed Cuckoo *** 4/11 5/9 6/6 6/12 After Jun 30
Mourning Warbler ** 4/24 5/9 5/13 5/20 5/26
Black Tern ** 5/9 5/11 5/15 5/20 5/23
Yellow-bellied Flycatcher ** 5/9 5/11 5/15 5/19 5/22

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Palm Warbler *** - 3/2 3/6 5/5 5/12
Savannah Sparrow *** 3/7 3/9 3/13 5/10 5/18
Vesper Sparrow * 3/7 3/10 3/15 5/5 5/15
Cedar Waxwing *** 3/2 3/20 3/27 5/22 5/28
Louisiana Waterthrush * 3/14 3/22 4/2 5/24 6/13
Pine Siskin * 3/26 3/29 4/5 5/12 5/18
Blue-headed Vireo ** 3/2 3/3 4/8 5/10 5/26
Upland Sandpiper * 3/21 3/28 4/12 5/5 5/12
Western Sandpiper * 3/2 3/7 4/14 5/22 5/31
White-eyed Vireo ** 3/6 3/22 4/15 6/13 6/26
Lincoln's Sparrow *** 3/2 3/7 4/16 5/8 5/17
Swainson's Hawk ** 3/17 3/29 4/18 5/6 6/1
Northern Parula *** 3/2 3/15 4/18 5/10 6/25
American Avocet ** 3/19 4/10 4/19 5/5 5/11
Sanderling ** 3/30 4/13 4/19 5/30 6/7
Kentucky Warbler * 4/3 4/14 4/21 After Jun 30 -
Yellow-throated Vireo * 3/13 3/24 4/22 After Jun 30 -
Ruddy Turnstone ** 4/8 4/14 4/23 5/24 5/31
Dunlin ** 4/9 4/13 4/23 5/25 6/3
Long-billed Dowitcher *** 3/2 4/13 4/23 5/5 5/15
Brown-crested Flycatcher * 3/31 4/17 4/23 5/31 6/4
Black-bellied Plover *** 4/9 4/14 4/24 5/20 5/28
Chuck-will's-widow * 3/29 4/10 4/24 6/25 After Jun 30
Scarlet Tanager *** 4/11 4/16 4/24 5/7 5/12
Semipalmated Plover ** 4/8 4/15 4/25 5/29 6/6
Lesser Yellowlegs *** 3/7 4/13 4/25 5/7 5/24
White-crowned Sparrow *** 4/12 4/18 4/25 5/7 5/14
Solitary Sandpiper *** 4/1 4/15 4/26 5/9 5/19
Ruby-throated Hummingbird *** 3/15 4/6 4/26 5/17 5/23
Gray-cheeked Thrush ** 4/15 4/20 4/26 5/16 5/21
Wood Thrush *** 4/12 4/17 4/26 5/8 6/20
Nashville Warbler *** 4/5 4/13 4/26 5/8 5/19
Orchard Oriole *** 3/31 4/13 4/26 5/17 6/19
Gray Catbird *** 4/12 4/17 4/27 5/8 5/17
Black-and-white Warbler *** 3/7 4/17 4/27 5/7 5/17
Tennessee Warbler *** 4/10 4/14 4/27 5/15 5/19
Blue Grosbeak * 4/7 4/17 4/27 6/21 6/24
Indigo Bunting *** 4/3 4/16 4/27 5/10 6/23
Bronzed Cowbird * 4/2 4/13 4/27 5/31 6/4
Baltimore Oriole *** 4/10 4/14 4/27 5/5 5/19
Green Heron * 3/26 4/10 4/28 5/18 5/22
Pectoral Sandpiper ** 3/2 3/23 4/28 5/18 5/28
Bell's Vireo * 4/5 4/17 4/28 6/1 6/9
Northern Waterthrush *** 4/12 4/16 4/28 5/15 5/21
Rose-breasted Grosbeak *** 4/12 4/17 4/28 5/5 5/16
Eastern Kingbird *** 3/27 4/8 4/29 5/18 5/24
Ovenbird *** 4/11 4/17 4/29 5/9 After Jun 30
Golden-winged Warbler ** 4/13 4/24 4/29 5/5 5/15
Black-throated Green Warbler *** 4/9 4/14 4/29 5/15 5/22
Clay-colored Sparrow *** 4/12 4/23 4/29 5/11 5/17
Painted Bunting ** 4/11 4/21 4/29 After Jun 30 -
Brown-headed Cowbird *** 3/7 3/18 4/29 5/23 After Jun 30
Stilt Sandpiper * 3/16 4/14 4/30 5/19 5/26
Yellow-crowned Night-Heron * 3/2 4/9 5/1 5/16 5/20
Philadelphia Vireo ** 4/23 4/27 5/1 5/16 5/20
Northern Rough-winged Swallow *** 3/2 3/22 5/1 5/12 After Jun 30
Bay-breasted Warbler *** 4/22 4/27 5/1 5/16 5/18
Yellow Warbler *** 4/14 4/25 5/1 5/17 5/22
Lark Sparrow * 3/16 4/6 5/1 5/29 After Jun 30
Dickcissel *** 4/18 4/23 5/1 5/21 5/26
Least Sandpiper *** 4/13 4/22 5/2 5/18 5/24
Warbling Vireo ** 4/5 4/13 5/2 5/17 5/23
Bank Swallow ** 3/31 4/18 5/2 5/19 5/26
Barn Swallow *** 3/10 3/22 5/2 5/19 5/27
Veery *** 4/15 4/20 5/2 5/8 5/20
Common Yellowthroat *** 4/5 4/15 5/2 5/16 5/24
Baird's Sandpiper * 3/9 3/29 5/3 5/19 5/28
Chestnut-sided Warbler *** 4/22 4/26 5/3 5/16 5/21
Wilson's Phalarope *** 4/14 4/21 5/4 5/18 5/26
Black-chinned Hummingbird * 3/2 3/17 5/4 5/24 6/2
Swainson's Thrush *** 4/13 4/17 5/4 5/17 5/23
Blackpoll Warbler *** 4/15 4/19 5/4 5/11 5/22
Bobolink *** 4/18 4/25 5/4 5/8 5/21
Spotted Sandpiper *** 4/12 4/22 5/5 5/20 5/26
Mississippi Kite ** 4/17 4/24 5/7 5/22 5/26
American Robin *** 4/23 4/28 5/7 5/23 After Jun 30
Eastern Phoebe ** 4/23 4/26 5/8 After Jun 30 -
Great Crested Flycatcher *** 3/28 4/20 5/8 6/9 After Jun 30
Western Kingbird ** 4/7 4/20 5/10 5/30 6/2
American Redstart *** 4/13 4/29 5/10 5/16 5/23
Chimney Swift *** 3/23 4/2 5/11 5/25 5/29
Magnolia Warbler *** 4/21 4/26 5/11 5/16 5/20
Blackburnian Warbler *** 4/13 4/26 5/11 5/16 5/21
Wilson's Warbler *** 4/20 4/30 5/11 5/19 5/23
Olive-sided Flycatcher * 4/20 5/8 5/12 5/17 6/2
Eastern Wood-Pewee *** 4/14 4/24 5/12 5/22 5/26
Least Flycatcher *** 4/24 4/30 5/12 5/19 5/23
Scissor-tailed Flycatcher ** 3/16 3/26 5/12 5/30 After Jun 30
Red-eyed Vireo *** 4/1 4/15 5/12 5/24 After Jun 30
Cliff Swallow ** 3/12 4/4 5/12 5/20 6/17

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Harris's Sparrow * - - Before Mar 1 3/10 5/12
Ring-billed Gull *** - - Before Mar 1 3/14 5/7
Tree Swallow *** 3/17 3/22 3/25 3/31 5/24
Great Blue Heron ** - - Before Mar 1 4/1 5/23
Bald Eagle ** - - Before Mar 1 4/1 5/22
Yellow-rumped Warbler *** 3/2 3/4 3/7 4/1 5/13
Wilson's Snipe ** 3/5 3/6 3/8 4/5 5/5
Double-crested Cormorant *** 3/2 3/7 3/10 4/9 5/8
Cinnamon Teal * - - Before Mar 1 4/10 5/8
Pied-billed Grebe *** - - Before Mar 1 4/13 5/5
Chipping Sparrow *** 3/9 3/18 4/1 4/16 5/16
Cooper's Hawk * 3/2 3/3 3/11 4/17 5/20
Blue-gray Gnatcatcher *** 3/17 3/24 4/8 4/18 6/26
Red-breasted Merganser * - - Before Mar 1 4/20 5/11
Prothonotary Warbler * 3/25 4/5 4/18 4/22 6/26
Broad-winged Hawk ** 3/19 3/26 4/13 4/24 5/26
Yellow-throated Warbler * 3/2 3/8 4/9 4/25 After Jun 30
Northern Harrier *** - - Before Mar 1 4/26 5/8
House Wren ** 3/18 3/27 4/14 4/26 5/18
Prairie Warbler * 3/22 4/3 4/18 4/26 6/18
Northern Shoveler *** - - Before Mar 1 4/28 5/21
Sharp-shinned Hawk * - - Before Mar 1 4/28 5/10
Herring Gull *** - - Before Mar 1 4/28 5/6
Orange-crowned Warbler *** - - Before Mar 1 4/28 5/11
Swamp Sparrow *** 3/2 3/6 3/10 4/28 5/6
Spotted Towhee * 3/2 3/11 3/21 4/28 5/10
American Coot *** - - Before Mar 1 4/29 5/16
Long-billed Curlew * 3/2 3/11 3/16 4/29 5/12
Sedge Wren ** 4/9 4/13 4/18 4/29 5/5
Hooded Warbler *** 3/17 3/24 4/19 4/29 5/10
White-throated Sparrow *** 3/16 4/7 4/11 4/29 5/9
Brown Pelican *** - 3/2 4/17 4/30 5/6
Willet *** 3/8 4/12 4/19 4/30 5/7
Least Tern *** 3/27 4/12 4/23 4/30 5/6
Royal Tern *** 3/2 4/6 4/19 4/30 5/6
Sandwich Tern *** 3/15 4/13 4/19 4/30 5/7
Marsh Wren *** 3/6 4/13 4/19 4/30 5/8
Cerulean Warbler ** 4/3 4/13 4/20 4/30 5/5
Summer Tanager *** 4/3 4/15 4/25 4/30 5/17
Blue-winged Teal *** 3/2 3/22 4/4 5/1 5/23
Sora *** 3/7 4/9 4/22 5/1 5/15
Common Gallinule *** - 3/2 3/9 5/1 5/9
American Golden-Plover * 3/2 3/22 3/29 5/1 5/13
Laughing Gull *** 3/2 4/12 4/20 5/1 5/7
Forster's Tern *** 3/7 3/9 3/16 5/1 5/11
Couch's Kingbird * 3/2 3/12 3/27 5/1 5/30
Black-bellied Whistling-Duck ** 3/8 3/17 4/24 5/2 5/7
Cattle Egret *** 3/18 4/5 4/21 5/2 5/8
Black-necked Stilt *** 3/9 3/17 4/21 5/2 5/9
Franklin's Gull * 3/28 4/5 4/19 5/2 5/23
Gull-billed Tern ** 3/15 4/10 4/18 5/2 5/8
Caspian Tern ** 3/17 4/13 4/19 5/2 5/8
Fulvous Whistling-Duck ** 4/1 4/13 4/24 5/3 5/9
Least Bittern * 4/8 4/14 4/24 5/3 5/9
White-faced Ibis *** 3/23 4/14 4/25 5/3 5/8
Greater Yellowlegs *** 3/2 3/10 4/1 5/3 5/18
Whimbrel ** 4/5 4/11 4/25 5/4 6/1
Short-billed Dowitcher ** 3/13 4/13 4/20 5/4 5/21
American Avocet ** 3/19 4/10 4/19 5/5 5/11
Upland Sandpiper * 3/21 3/28 4/12 5/5 5/12
Long-billed Dowitcher *** 3/2 4/13 4/23 5/5 5/15
Golden-winged Warbler ** 4/13 4/24 4/29 5/5 5/15
Palm Warbler *** - 3/2 3/6 5/5 5/12
Vesper Sparrow * 3/7 3/10 3/15 5/5 5/15
Rose-breasted Grosbeak *** 4/12 4/17 4/28 5/5 5/16
Baltimore Oriole *** 4/10 4/14 4/27 5/5 5/19
Swainson's Hawk * 3/17 3/29 4/18 5/6 6/1
Lesser Yellowlegs *** 3/7 4/13 4/25 5/7 5/24
Black-and-white Warbler *** 3/7 4/17 4/27 5/7 5/17
White-crowned Sparrow *** 4/12 4/18 4/25 5/7 5/14
Scarlet Tanager *** 4/11 4/16 4/24 5/7 5/12
Veery *** 4/15 4/20 5/2 5/8 5/20
Wood Thrush * 4/12 4/17 4/26 5/8 6/20
Gray Catbird *** 4/12 4/17 4/27 5/8 5/17
Nashville Warbler *** 4/5 4/13 4/26 5/8 5/19
Lincoln's Sparrow *** 3/2 3/7 4/16 5/8 5/17
Bobolink *** 4/18 4/25 5/4 5/8 5/21
Solitary Sandpiper *** 4/1 4/15 4/26 5/9 5/19
Ovenbird ** 4/11 4/17 4/29 5/9 After Jun 30
Blue-headed Vireo ** 3/2 3/3 4/8 5/10 5/26
Northern Parula ** 3/2 3/15 4/18 5/10 6/25
Savannah Sparrow *** 3/7 3/9 3/13 5/10 5/18
Indigo Bunting ** 4/3 4/16 4/27 5/10 6/23
Blackpoll Warbler *** 4/15 4/19 5/4 5/11 5/22
Clay-colored Sparrow *** 4/12 4/23 4/29 5/11 5/17
Northern Rough-winged Swallow ** 3/2 3/22 5/1 5/12 After Jun 30
Pine Siskin *** 3/26 3/29 4/5 5/12 5/18

Weekly mean spring nocturnal migration activity and direction of movement in the Gulf of Mexico region for the week of 4-10 May, 1995 to 2015. Circular buffers around radar stations represent migration activity scaled to radar reflectivity (a measure of biological activity), with weekly activity represented by size scaled to the activity at KCRP Corpus Christi and seasonal activity represented by colors scaled to the most intense movements of the spring period (L: light, M: moderate, H:heavy); arrows represent mean track direction (a measure of the direction birds are traveling) derived from radial velocity.

Great Plains

After a slow start to the weekend, moderate to locally very heavy flights are likely for the days that follow. By Tuesday night, as a disturbance moves into the central Plains, more southerly areas will continue to experience good migration conditions whereas more northerly areas will start to experience much less favorable conditions. These less favorable conditions become more widespread to end the period, with migration diminishing in intensity and extent; movements will be mostly light to locally moderate. Note that some more westerly areas of the Plains may see higher than expected intensities, particularly in the central and northern areas.

Bell’s Vireo. Petra Hockey/Macaulay Library. eBird S36470828.

Species on the Move

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Grasshopper Sparrow *** 4/5 5/27 After Jun 30 - -
Marbled Godwit * 4/9 6/5 6/13 6/21 After Jun 30
Black-crowned Night-Heron * 4/12 6/4 6/13 After Jun 30 -
Bell's Vireo *** 4/26 5/6 6/3 6/9 6/28
Red-headed Woodpecker ****! 4/28 5/5 5/15 6/4 6/8
Sedge Wren * 4/28 6/11 6/14 6/20 6/23
Swainson's Thrush ****! 4/28 5/5 5/12 5/23 5/30
Lark Bunting *** 4/28 5/9 5/31 6/24 After Jun 30
Black-headed Grosbeak *** 4/28 5/7 6/4 After Jun 30 -
Common Nighthawk *** 4/29 5/22 5/30 6/5 After Jun 30
Least Flycatcher ****! 4/29 5/5 5/13 5/24 5/28
Gray Catbird ****! 4/29 5/5 5/17 5/24 5/29
Orchard Oriole ****! 4/29 5/6 6/2 6/8 6/10
Philadelphia Vireo *** 4/30 5/6 5/16 5/24 6/1
Yellow-breasted Chat *** 4/30 5/29 6/2 6/8 6/11
Rose-breasted Grosbeak ****! 4/30 5/5 5/10 5/23 5/26
Blue Grosbeak *** 4/30 5/30 6/5 6/10 6/13
Bobolink *** 4/30 5/12 6/14 6/23 After Jun 30
Eastern Wood-Pewee ****! 5/1 5/8 5/17 6/25 After Jun 30
Acadian Flycatcher *** 5/1 5/5 5/24 5/28 After Jun 30
Yellow-billed Cuckoo *** 5/2 5/24 5/31 After Jun 30 -
Gray-cheeked Thrush *** 5/2 5/7 5/12 5/24 5/28
Ovenbird *** 5/3 5/8 5/16 5/23 5/27
American Redstart ****! 5/3 5/10 5/18 5/24 5/28
Chestnut-sided Warbler *** 5/3 5/7 5/18 5/25 5/30
Blackpoll Warbler ****! 5/3 5/7 5/14 5/25 5/29
Wilson's Warbler ****! 5/3 5/7 5/13 5/24 5/28
Willow Flycatcher *** 5/4 5/16 6/13 6/29 After Jun 30
Magnolia Warbler *** 5/4 5/8 5/18 5/24 5/29
White-rumped Sandpiper *** 5/6 5/14 5/18 5/23 6/9
Black Tern ****! 5/6 5/12 5/19 5/24 6/22
Mourning Warbler *** 5/6 5/11 5/20 5/27 6/3
Stilt Sandpiper *** 5/7 5/13 5/17 5/23 5/27
Alder Flycatcher *** 5/7 5/13 5/24 6/1 6/6

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Eastern Phoebe *** 3/2 3/12 5/5 5/18 After Jun 30
Common Grackle *** 3/2 3/13 5/21 6/11 After Jun 30
Wood Duck ** 3/2 3/24 5/6 5/24 6/7
Pectoral Sandpiper ** 3/25 3/28 5/16 5/24 5/30
Turkey Vulture *** 3/14 3/30 5/9 5/18 After Jun 30
Louisiana Waterthrush ** 3/25 4/2 5/5 5/17 5/22
White-eyed Vireo * 3/19 4/4 5/23 6/12 After Jun 30
Purple Martin *** 3/20 4/4 5/7 After Jun 30 -
Blue-gray Gnatcatcher *** 3/26 4/5 5/6 5/17 5/22
Northern Parula *** 4/1 4/8 5/7 5/18 5/24
Say's Phoebe * 3/23 4/14 6/11 6/26 After Jun 30
Yellow-headed Blackbird ** 4/7 4/14 6/15 6/20 6/24
Western Grebe * 4/1 4/16 6/12 After Jun 30 -
Cattle Egret * 3/30 4/16 6/22 After Jun 30 -
Sora ** 4/10 4/17 5/17 6/21 After Jun 30
Upland Sandpiper *** 4/3 4/20 5/6 5/11 5/18
Forster's Tern ** 4/13 4/20 5/13 5/20 After Jun 30
Prothonotary Warbler ** 4/6 4/20 5/7 5/21 6/4
Lark Sparrow *** 4/7 4/20 5/8 5/16 After Jun 30
Least Sandpiper *** 4/18 4/21 5/14 5/21 5/27
Semipalmated Sandpiper *** 4/13 4/21 5/15 5/24 6/2
Brown-headed Cowbird *** 3/14 4/21 5/11 5/19 6/10
Barn Swallow ****! 4/3 4/22 5/18 6/29 After Jun 30
Green Heron *** 4/12 4/23 5/14 6/5 6/11
Cliff Swallow *** 4/11 4/23 6/16 6/24 After Jun 30
Chimney Swift *** 4/16 4/26 5/13 6/9 6/14
Western Kingbird *** 4/20 4/26 6/6 6/26 After Jun 30
Chipping Sparrow ****! 3/31 4/26 5/6 5/18 5/27
Eastern Towhee ** 3/23 4/26 5/9 5/22 5/31
Bank Swallow *** 4/13 4/27 5/15 5/24 After Jun 30
Spotted Sandpiper *** 4/18 4/28 5/12 5/24 6/1
House Wren ****! 4/16 4/28 5/12 5/21 6/9
Brown Thrasher ****! 4/2 4/28 5/7 6/9 6/29
Orange-crowned Warbler ****! 4/21 4/28 5/5 5/15 5/22
Warbling Vireo ****! 4/20 4/29 5/15 5/23 After Jun 30
Palm Warbler *** 4/24 4/29 5/5 5/24 5/26
Great Crested Flycatcher ****! 4/23 4/30 5/12 6/26 After Jun 30
Eastern Kingbird ****! 4/18 4/30 5/24 6/24 6/26
Blue-headed Vireo *** 4/26 4/30 5/9 5/19 5/23
Nashville Warbler ****! 4/26 4/30 5/7 5/20 5/26
Baltimore Oriole ****! 4/23 4/30 5/12 5/23 6/27
Ruby-throated Hummingbird *** 4/18 5/1 5/16 5/23 6/12
Yellow-throated Vireo *** 4/25 5/1 5/11 5/27 After Jun 30
Cassin's Sparrow * 4/7 5/1 6/13 After Jun 30 -
Clay-colored Sparrow ****! 4/24 5/1 5/9 5/18 5/24
Summer Tanager *** 4/21 5/1 5/10 5/18 After Jun 30
Painted Bunting ** 4/23 5/1 6/3 6/29 After Jun 30
Dickcissel *** 4/23 5/1 After Jun 30 - -
Red-eyed Vireo *** 4/25 5/2 5/27 6/4 After Jun 30
Wood Thrush *** 4/26 5/2 5/13 5/21 6/3
Kentucky Warbler *** 4/21 5/2 5/12 5/29 6/5
Indigo Bunting ****! 4/26 5/2 5/10 6/5 After Jun 30
Mississippi Kite *** 4/24 5/3 5/16 6/12 6/15
Northern Waterthrush *** 4/28 5/3 5/11 5/23 5/28
Black-and-white Warbler *** 4/26 5/3 5/9 5/13 6/5
Tennessee Warbler ****! 4/29 5/3 5/17 5/24 5/29
Common Yellowthroat ****! 4/25 5/3 5/18 6/24 6/29
Yellow Warbler ****! 4/29 5/4 5/16 5/24 5/28
Scarlet Tanager ** 4/25 5/4 5/20 6/6 6/11
Red-headed Woodpecker *** 4/28 5/5 5/15 6/4 6/8
Acadian Flycatcher ** 5/1 5/5 5/24 5/28 After Jun 30
Least Flycatcher ****! 4/29 5/5 5/13 5/24 5/28
Swainson's Thrush ****! 4/28 5/5 5/12 5/23 5/30
Gray Catbird ****! 4/29 5/5 5/17 5/24 5/29
Rose-breasted Grosbeak ****! 4/30 5/5 5/10 5/23 5/26
Bell's Vireo *** 4/26 5/6 6/3 6/9 6/28
Philadelphia Vireo *** 4/30 5/6 5/16 5/24 6/1
Orchard Oriole *** 4/29 5/6 6/2 6/8 6/10
Gray-cheeked Thrush *** 5/2 5/7 5/12 5/24 5/28
Chestnut-sided Warbler *** 5/3 5/7 5/18 5/25 5/30
Blackpoll Warbler ****! 5/3 5/7 5/14 5/25 5/29
Wilson's Warbler *** 5/3 5/7 5/13 5/24 5/28
Black-headed Grosbeak ** 4/28 5/7 6/4 After Jun 30 -
Eastern Wood-Pewee ****! 5/1 5/8 5/17 6/25 After Jun 30
Ovenbird *** 5/3 5/8 5/16 5/23 5/27
Magnolia Warbler *** 5/4 5/8 5/18 5/24 5/29
Lark Bunting ** 4/28 5/9 5/31 6/24 After Jun 30
American Redstart ****! 5/3 5/10 5/18 5/24 5/28
Mourning Warbler *** 5/6 5/11 5/20 5/27 6/3
Black Tern ****! 5/6 5/12 5/19 5/24 6/22
Bobolink *** 4/30 5/12 6/14 6/23 After Jun 30

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Northern Pintail ** - 3/2 3/12 6/25 After Jun 30
Gadwall *** 3/11 3/17 3/25 After Jun 30 -
Ruddy Duck *** 3/2 3/16 4/6 5/5 After Jun 30
Common Loon * 3/16 3/24 4/6 5/8 5/14
Belted Kingfisher ** 3/2 3/23 4/9 5/20 6/4
Horned Grebe ** 3/9 3/17 4/16 5/6 5/18
Wilson's Snipe * 3/2 4/8 4/17 6/20 After Jun 30
American Pipit ** 3/2 3/14 4/19 5/7 5/18
Hermit Thrush ** 3/23 4/2 4/22 5/10 5/18
Blue-winged Teal *** 3/11 3/19 4/23 5/23 6/25
Osprey *** 4/6 4/13 4/23 5/5 5/9
Yellow-throated Warbler * 3/17 4/2 4/23 5/20 6/5
Great Blue Heron *** 3/2 3/22 4/24 5/19 After Jun 30
Great Egret *** 3/24 4/8 4/24 5/8 After Jun 30
Baird's Sandpiper *** 3/14 3/27 4/24 5/24 6/2
Savannah Sparrow *** 3/16 4/17 4/24 5/7 6/23
American Avocet ** 4/9 4/17 4/25 6/23 After Jun 30
Semipalmated Plover ** 4/13 4/20 4/25 5/24 6/1
Scissor-tailed Flycatcher * 3/28 4/7 4/25 6/12 After Jun 30
Eared Grebe ** 4/7 4/17 4/26 6/21 After Jun 30
White-faced Ibis ** 4/9 4/18 4/26 5/23 After Jun 30
Lesser Yellowlegs *** 3/29 4/21 4/26 5/22 5/29
Snowy Egret * 4/1 4/12 4/27 6/29 After Jun 30
Wilson's Phalarope *** 4/16 4/21 4/28 5/22 After Jun 30
Field Sparrow ** 3/12 3/31 4/28 5/11 5/18
Little Blue Heron * 3/29 4/10 4/29 5/8 5/18
Broad-winged Hawk ** 4/6 4/20 4/29 5/21 5/27
Willet *** 4/17 4/22 4/29 5/6 After Jun 30
Long-billed Dowitcher *** 4/17 4/21 5/1 5/20 5/27
Tree Swallow *** 3/24 4/1 5/1 6/25 After Jun 30
Ruby-crowned Kinglet *** 3/26 4/1 5/1 5/12 5/24
White-throated Sparrow *** 4/18 4/25 5/1 5/11 5/23
Harris's Sparrow *** 4/17 4/23 5/2 5/13 5/22
Solitary Sandpiper *** 4/16 4/25 5/3 5/11 5/23
Peregrine Falcon ** 4/12 4/21 5/4 5/16 5/27
Northern Rough-winged Swallow *** 3/30 4/21 5/4 5/21 5/27
Yellow-rumped Warbler *** 4/11 4/28 5/4 5/15 5/23
White-crowned Sparrow *** 4/19 4/28 5/4 5/14 5/21
Lincoln's Sparrow *** 4/6 4/28 5/4 5/14 5/21
Eastern Phoebe *** 3/2 3/12 5/5 5/18 After Jun 30
Louisiana Waterthrush *** 3/25 4/2 5/5 5/17 5/22
Orange-crowned Warbler *** 4/21 4/28 5/5 5/15 5/22
Palm Warbler *** 4/24 4/29 5/5 5/24 5/26
Wood Duck *** 3/2 3/24 5/6 5/24 6/7
Upland Sandpiper * 4/3 4/20 5/6 5/11 5/18
Blue-gray Gnatcatcher *** 3/26 4/5 5/6 5/17 5/22
Chipping Sparrow *** 3/31 4/26 5/6 5/18 5/27
Purple Martin ** 3/20 4/4 5/7 After Jun 30 -
Brown Thrasher *** 4/2 4/28 5/7 6/9 6/29
Prothonotary Warbler ** 4/6 4/20 5/7 5/21 6/4
Nashville Warbler *** 4/26 4/30 5/7 5/20 5/26
Northern Parula *** 4/1 4/8 5/7 5/18 5/24
Lark Sparrow *** 4/7 4/20 5/8 5/16 After Jun 30
Turkey Vulture *** 3/14 3/30 5/9 5/18 After Jun 30
Blue-headed Vireo *** 4/26 4/30 5/9 5/19 5/23
Black-and-white Warbler *** 4/26 5/3 5/9 5/13 6/5
Clay-colored Sparrow *** 4/24 5/1 5/9 5/18 5/24
Eastern Towhee *** 3/23 4/26 5/9 5/22 5/31
Summer Tanager *** 4/21 5/1 5/10 5/18 After Jun 30
Rose-breasted Grosbeak *** 4/30 5/5 5/10 5/23 5/26
Indigo Bunting *** 4/26 5/2 5/10 6/5 After Jun 30
Yellow-throated Vireo ** 4/25 5/1 5/11 5/27 After Jun 30
Northern Waterthrush *** 4/28 5/3 5/11 5/23 5/28
Brown-headed Cowbird *** 3/14 4/21 5/11 5/19 6/10
Spotted Sandpiper *** 4/18 4/28 5/12 5/24 6/1
Great Crested Flycatcher *** 4/23 4/30 5/12 6/26 After Jun 30
House Wren *** 4/16 4/28 5/12 5/21 6/9
Gray-cheeked Thrush *** 5/2 5/7 5/12 5/24 5/28
Swainson's Thrush *** 4/28 5/5 5/12 5/23 5/30
Kentucky Warbler ** 4/21 5/2 5/12 5/29 6/5
Baltimore Oriole *** 4/23 4/30 5/12 5/23 6/27

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Redhead ** - 3/2 3/14 3/29 After Jun 30
Ring-necked Duck *** - 3/2 3/19 4/2 5/7
Bufflehead *** 3/2 3/14 3/23 4/6 5/8
Ring-billed Gull *** 3/2 3/10 3/18 4/8 After Jun 30
Song Sparrow ** 3/12 3/17 3/31 4/11 After Jun 30
Northern Harrier ** 3/2 3/7 3/17 4/26 After Jun 30
American Kestrel *** - 3/2 3/30 4/26 5/5
American Wigeon ** - 3/2 3/24 4/27 After Jun 30
Green-winged Teal *** 3/2 3/13 3/27 4/27 5/8
Sharp-shinned Hawk ** 3/23 3/29 4/5 4/28 5/13
Lesser Scaup *** 3/2 3/17 3/28 4/29 After Jun 30
Double-crested Cormorant *** 3/12 3/28 4/14 4/29 After Jun 30
American White Pelican * 3/13 3/16 4/21 4/29 6/27
Hudsonian Godwit ** 4/11 4/17 4/23 4/29 5/26
Pied-billed Grebe *** 3/16 4/8 4/18 4/30 5/11
American Coot *** 3/14 4/9 4/21 4/30 5/26
Greater Yellowlegs *** 3/12 3/22 4/20 4/30 5/9
Northern Shoveler *** 3/10 3/16 4/14 5/1 After Jun 30
Bonaparte's Gull *** 3/29 4/6 4/18 5/1 5/13
Franklin's Gull *** 4/2 4/13 4/23 5/1 5/24
Vesper Sparrow *** 3/24 3/31 4/22 5/1 5/9
Swainson's Hawk * 3/31 4/9 4/23 5/2 After Jun 30
Black-necked Stilt * 4/9 4/17 4/26 5/2 After Jun 30
Killdeer * 3/2 3/7 3/31 5/2 After Jun 30
Ruddy Duck ** 3/2 3/16 4/6 5/5 After Jun 30
Osprey *** 4/6 4/13 4/23 5/5 5/9
Horned Grebe *** 3/9 3/17 4/16 5/6 5/18
Willet ** 4/17 4/22 4/29 5/6 After Jun 30
American Pipit ** 3/2 3/14 4/19 5/7 5/18
Savannah Sparrow ** 3/16 4/17 4/24 5/7 6/23
Common Loon ** 3/16 3/24 4/6 5/8 5/14
Great Egret ** 3/24 4/8 4/24 5/8 After Jun 30
Little Blue Heron * 3/29 4/10 4/29 5/8 5/18
Hermit Thrush *** 3/23 4/2 4/22 5/10 5/18
Upland Sandpiper * 4/3 4/20 5/6 5/11 5/18
Solitary Sandpiper *** 4/16 4/25 5/3 5/11 5/23
Field Sparrow *** 3/12 3/31 4/28 5/11 5/18
White-throated Sparrow *** 4/18 4/25 5/1 5/11 5/23
Ruby-crowned Kinglet *** 3/26 4/1 5/1 5/12 5/24

West

The weekend will bring moderate flights in many areas, though mostly east of Pacific Coast and coastal ranges. Some of these flights, particularly east of the Rockies and in portions of the Desert Southwest, may be heavy. As the work week begins, these favorable migration conditions will become increasingly restricted to the southern Rockies and Desert Southwest, with similarly intense movements continuing. However, by Wednesday favorable migration conditions appear in almost an opposite pattern, with portions of the Pacific Coast and northern Rockies seeing light to moderate flights in contrast to a much quieter Desert Southwest. To end the week, a pattern between these extremes emerges and scattered light to moderate flights are likely in a number of areas; but most of the activity will be east of the Continental Divide.

Chipping Sparrow. Tim Ryan/Macaulay Library. eBird S36484098.

Species on the Move

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Chipping Sparrow *** 4/10 5/6 5/14 5/21 5/26
Dusky Flycatcher ** 4/17 5/6 6/9 6/25 After Jun 30
Yellow-breasted Chat *** 4/17 5/6 5/25 6/16 6/23
Calliope Hummingbird * 4/19 6/8 6/14 6/25 After Jun 30
MacGillivray's Warbler *** 4/24 5/7 5/23 6/15 6/18
Swainson's Thrush *** 4/28 5/10 After Jun 30 - -
Yellow Warbler ****! 4/30 5/6 5/23 5/31 6/4
Bullock's Oriole ****! 4/30 5/5 5/17 6/3 6/25
Western Wood-Pewee ****! 5/1 5/20 6/6 6/26 After Jun 30
Cedar Waxwing *** 5/3 5/14 6/1 6/10 6/16
Eastern Kingbird *** 5/7 5/24 5/30 After Jun 30 -

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Violet-green Swallow *** 3/2 3/17 5/18 5/24 5/29
Tree Swallow *** 3/2 4/2 5/12 5/29 6/11
White-throated Swift * 3/2 4/3 5/29 After Jun 30 -
Black-chinned Hummingbird *** 3/16 4/6 5/17 5/30 6/10
Common Yellowthroat *** 3/19 4/7 5/19 6/11 6/16
Yellow-headed Blackbird ** 4/1 4/10 5/14 5/30 6/3
Ash-throated Flycatcher *** 4/5 4/14 5/8 6/9 6/19
Brewer's Blackbird ** 3/31 4/15 5/29 After Jun 30 -
Cassin's Vireo ** 3/28 4/18 5/9 After Jun 30 -
Green Heron * 4/3 4/21 5/10 5/28 6/8
Hammond's Flycatcher * 4/10 4/21 6/10 6/25 After Jun 30
Vaux's Swift ** 4/12 4/23 5/8 5/12 5/21
Northern Rough-winged Swallow ** 3/2 4/23 5/8 5/29 After Jun 30
Barn Swallow *** 3/30 4/23 5/19 6/1 6/12
Green-tailed Towhee ** 4/19 4/23 5/11 5/17 5/22
Forster's Tern ** 4/11 4/24 5/9 5/19 6/11
Hermit Warbler ** 4/13 4/24 5/7 After Jun 30 -
Wilson's Warbler *** 4/12 4/24 5/10 6/1 6/6
Red-necked Phalarope ** 4/21 4/25 5/15 5/27 6/1
Pacific-slope Flycatcher ** 3/16 4/25 5/31 6/22 After Jun 30
Bank Swallow ** 4/12 4/25 5/19 5/31 6/8
Townsend's Warbler *** 4/20 4/25 5/9 5/19 6/3
Lazuli Bunting *** 4/12 4/25 5/16 After Jun 30 -
Cliff Swallow *** 3/19 4/26 6/19 After Jun 30 -
Wilson's Phalarope ** 4/26 4/29 5/14 5/20 6/2
Western Kingbird *** 3/19 4/30 5/15 6/4 6/10
Olive-sided Flycatcher *** 4/17 5/1 6/3 6/17 6/27
Warbling Vireo *** 4/19 5/1 6/3 6/25 After Jun 30
House Wren *** 4/18 5/1 5/24 6/17 6/22
Spotted Sandpiper *** 4/22 5/2 5/13 5/27 6/3
Brown-headed Cowbird *** 4/11 5/3 5/17 6/1 6/20
Western Tanager *** 4/22 5/4 5/21 5/31 6/9
Black-headed Grosbeak *** 4/22 5/4 5/23 6/5 6/26
Bullock's Oriole *** 4/30 5/5 5/17 6/3 6/25
Dusky Flycatcher * 4/17 5/6 6/9 6/25 After Jun 30
Yellow Warbler *** 4/30 5/6 5/23 5/31 6/4
Yellow-breasted Chat ** 4/17 5/6 5/25 6/16 6/23
Chipping Sparrow *** 4/10 5/6 5/14 5/21 5/26
MacGillivray's Warbler *** 4/24 5/7 5/23 6/15 6/18
Swainson's Thrush ** 4/28 5/10 After Jun 30 - -

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Greater Scaup * - - Before Mar 1 5/5 5/21
Ruddy Duck ** - - Before Mar 1 5/17 6/3
Broad-billed Hummingbird * 3/2 3/14 3/28 6/1 6/6
Cooper's Hawk * 3/2 3/14 3/29 5/14 5/26
Northern Shoveler *** 3/20 3/25 4/8 5/5 6/2
Rufous Hummingbird * 3/2 3/19 4/8 5/6 5/20
Gadwall ** 3/9 3/23 4/13 5/19 After Jun 30
American Pipit ** 4/2 4/8 4/13 5/8 5/18
Cinnamon Teal ** 3/2 4/7 4/19 5/8 6/6
Yellow-rumped Warbler *** 4/2 4/14 4/19 5/18 5/28
Eared Grebe ** 3/27 4/9 4/21 5/8 6/1
Greater White-fronted Goose * 4/10 4/15 4/22 5/5 5/14
Black-bellied Plover * 4/6 4/10 4/23 5/7 5/27
Marbled Godwit ** 4/10 4/16 4/25 5/6 5/11
Savannah Sparrow ** 3/26 4/8 4/25 5/5 5/19
Dunlin *** 4/8 4/23 4/27 5/7 5/15
Nashville Warbler ** 3/30 4/15 4/27 5/7 6/26
Black-throated Gray Warbler ** 3/27 4/13 4/27 5/7 6/10
Black-necked Stilt ** 3/28 4/6 4/28 5/10 6/4
Least Sandpiper *** 4/8 4/22 4/28 5/7 5/15
Caspian Tern ** 3/25 4/14 4/28 5/6 5/12
Hooded Oriole * 3/12 3/26 4/28 5/15 6/14
American Avocet ** 3/28 4/6 4/29 5/10 6/6
Whimbrel ** 3/16 4/18 4/29 5/8 5/21
Western Sandpiper *** 4/10 4/16 4/29 5/7 5/14
Semipalmated Plover *** 4/16 4/23 4/30 5/7 5/14
Willet *** 4/7 4/9 4/30 5/6 5/10
Swainson's Hawk * 3/28 4/8 5/1 5/31 6/5
Orange-crowned Warbler *** 3/20 4/4 5/1 5/15 5/22
Long-billed Dowitcher *** 4/22 4/28 5/3 5/9 5/24
Hermit Warbler * 4/13 4/24 5/7 After Jun 30 -
Vaux's Swift ** 4/12 4/23 5/8 5/12 5/21
Ash-throated Flycatcher * 4/5 4/14 5/8 6/9 6/19
Northern Rough-winged Swallow *** 3/2 4/23 5/8 5/29 After Jun 30
Forster's Tern * 4/11 4/24 5/9 5/19 6/11
Cassin's Vireo * 3/28 4/18 5/9 After Jun 30 -
Townsend's Warbler *** 4/20 4/25 5/9 5/19 6/3
Green Heron * 4/3 4/21 5/10 5/28 6/8
Wilson's Warbler *** 4/12 4/24 5/10 6/1 6/6
Green-tailed Towhee *** 4/19 4/23 5/11 5/17 5/22
Tree Swallow ** 3/2 4/2 5/12 5/29 6/11

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Glaucous-winged Gull ** - - Before Mar 1 3/3 5/13
Northern Pintail ** - - Before Mar 1 3/22 5/14
American Wigeon *** - - Before Mar 1 4/14 5/17
Pied-billed Grebe ** - - Before Mar 1 4/20 5/31
Common Merganser ** - - Before Mar 1 4/22 5/17
Ruby-crowned Kinglet *** - 3/2 3/9 4/25 5/17
White-crowned Sparrow *** 3/20 3/27 4/11 4/26 5/23
Lesser Scaup ** 3/2 3/11 3/15 4/27 5/21
Bufflehead *** - - Before Mar 1 4/28 5/19
Golden-crowned Sparrow *** 4/1 4/5 4/15 4/28 5/15
Ring-necked Duck *** - 3/2 3/10 4/30 5/17
Osprey * 3/22 4/4 4/21 4/30 5/23
American Coot *** - - Before Mar 1 4/30 6/4
Brant * 4/10 4/15 4/20 5/1 5/14
Cackling Goose ** - - Before Mar 1 5/1 5/13
Horned Grebe ** - - Before Mar 1 5/1 5/12
Green-winged Teal *** 3/20 3/22 3/26 5/2 5/12
Greater Yellowlegs *** 3/25 4/6 4/16 5/2 5/11
Surf Scoter ** 3/15 3/18 3/21 5/3 5/21
Common Loon ** 3/31 4/12 4/19 5/3 5/12
Sharp-shinned Hawk * 4/7 4/10 4/13 5/3 5/20
Greater White-fronted Goose ** 4/10 4/15 4/22 5/5 5/14
Northern Shoveler *** 3/20 3/25 4/8 5/5 6/2
Greater Scaup * - - Before Mar 1 5/5 5/21
Savannah Sparrow ** 3/26 4/8 4/25 5/5 5/19
Marbled Godwit *** 4/10 4/16 4/25 5/6 5/11
Willet *** 4/7 4/9 4/30 5/6 5/10
Caspian Tern ** 3/25 4/14 4/28 5/6 5/12
Rufous Hummingbird * 3/2 3/19 4/8 5/6 5/20
Black-bellied Plover * 4/6 4/10 4/23 5/7 5/27
Semipalmated Plover *** 4/16 4/23 4/30 5/7 5/14
Dunlin *** 4/8 4/23 4/27 5/7 5/15
Least Sandpiper *** 4/8 4/22 4/28 5/7 5/15
Western Sandpiper *** 4/10 4/16 4/29 5/7 5/14
Nashville Warbler * 3/30 4/15 4/27 5/7 6/26
Black-throated Gray Warbler ** 3/27 4/13 4/27 5/7 6/10
Cinnamon Teal *** 3/2 4/7 4/19 5/8 6/6
Eared Grebe ** 3/27 4/9 4/21 5/8 6/1
Whimbrel ** 3/16 4/18 4/29 5/8 5/21
American Pipit ** 4/2 4/8 4/13 5/8 5/18
Long-billed Dowitcher *** 4/22 4/28 5/3 5/9 5/24
Black-necked Stilt ** 3/28 4/6 4/28 5/10 6/4
American Avocet ** 3/28 4/6 4/29 5/10 6/6
Vaux's Swift ** 4/12 4/23 5/8 5/12 5/21

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Farnsworth and Van Doren

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