Regional Migration Forecast: 10-17 March 2017

Lucy’s Warbler. Bill Hill/Macaulay Library. eBird S34966303.

Continental Summary

A pulse of widespread light to moderate movements in favorable migration conditions comes to the West on Tuesday, Wednesday, and Thursday with species on the move including Rufous Hummingbird, Western Kingbird, Orange-crowned Warbler, Lucy’s Warbler, Hooded Oriole, and Scott’s Oriole, while highly variable, and in some cases extreme wintry, weather halts and starts mostly light to moderate flights that will include Blue-winged Teal, Green-winged Teal, Osprey, Killdeer, Greater Yellowlegs, Baird’s Sandpiper, Pectoral Sandpiper, Yellow-throated Vireo, Blue-gray Gnatcatcher, Louisiana Waterthrush, and Field Sparrow.

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

A cold weekend, with snow and frigid temperatures, kicks off the period and shuts down early spring flights. Although small areas of marginally favorable migration conditions appear following this initial cold blast, a major storm system moves through the region on Tuesday, continues the general pattern of unfavorable conditions for migrants to move. The first signs of a break in this pattern come on Wednesday and Thursday, as the Midwest sees a return of slightly warmer and more favorable conditions for birds to migrate; light to moderate movements will follow the arrival of these conditions.

Green-winged Teal. Davida Kalina/Macaulay Library. eBird S35073721.

Species on the Move

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Purple Finch * 2/2 4/12 4/25 5/7 5/16
Northern Harrier * 2/20 3/30 4/8 4/23 5/5
American Kestrel ** 2/26 3/30 4/12 4/28 5/11
Fox Sparrow *** 3/1 3/21 4/2 4/19 4/29
Great Blue Heron *** 3/2 3/21 5/14 5/28 6/7
Pied-billed Grebe *** 3/3 3/25 4/9 4/27 5/12
Wilson's Snipe ** 3/7 3/29 4/14 5/1 5/12
Cooper's Hawk * 3/11 4/13 4/24 5/13 5/25
Eastern Phoebe ****! 3/12 3/26 4/13 5/27 6/6
Osprey *** 3/13 3/30 4/18 5/1 5/11
Brown-headed Cowbird ****! 3/14 4/8 5/2 5/17 After Jun 30
Blue-winged Teal *** 3/15 4/1 4/18 5/3 5/16
Pectoral Sandpiper ** 3/17 3/29 4/16 5/23 6/5
Tree Swallow ****! 3/17 4/1 5/9 5/25 After Jun 30
Northern Gannet * 3/17 3/26 4/6 4/19 4/28
Bonaparte's Gull *** 3/18 3/28 4/11 4/24 5/4
Double-crested Cormorant *** 3/19 3/31 4/19 6/1 6/11
Great Egret *** 3/19 3/30 5/14 5/27 6/4
Common Loon *** 3/20 3/30 4/11 4/23 5/2
Golden-crowned Kinglet *** 3/20 3/28 4/8 4/21 4/30
Laughing Gull ** 3/20 4/2 5/17 5/30 6/7

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
American Wigeon *** 2/17 2/27 3/16 4/14 4/28
Red-breasted Merganser ** 2/20 2/27 3/14 4/21 5/5
Ring-billed Gull *** 2/20 2/27 3/13 4/18 4/28
Gadwall *** 2/19 2/28 3/17 4/18 5/2
Lesser Scaup *** 2/19 3/1 3/21 4/18 5/5
Bufflehead *** 2/21 3/2 3/28 4/21 5/6
Hooded Merganser *** 2/20 3/2 3/18 4/8 4/24
Ruddy Duck * 2/21 3/2 4/1 4/25 5/10
Ring-necked Duck *** 2/20 3/3 3/23 4/16 5/1
American Coot ** 2/21 3/3 4/6 5/1 5/21
American Woodcock ** 2/20 3/3 3/21 4/6 6/3
Red-winged Blackbird *** 2/18 3/3 5/5 5/20 After Jun 30
Northern Shoveler *** 2/20 3/5 4/4 4/26 5/11
Killdeer *** 2/20 3/6 3/30 6/3 6/13
Common Grackle *** 2/19 3/6 5/14 6/6 After Jun 30
Green-winged Teal *** 2/20 3/7 3/31 4/24 5/10
Rusty Blackbird * 2/23 3/8 4/10 5/1 5/13
Horned Grebe ** 2/26 3/9 3/27 4/17 5/7

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
American Tree Sparrow *** - - Before Feb 1 4/18 5/4
Dark-eyed Junco *** - 2/2 2/15 4/22 5/6
Brant * 2/19 2/24 3/4 5/26 6/4
Great Cormorant * 2/24 2/27 3/4 3/20 4/24
Surf Scoter * 2/23 2/27 3/5 4/19 4/28
Black Scoter * 2/23 2/27 3/5 3/18 6/1
Long-tailed Duck * 2/22 2/26 3/5 3/18 4/26
Rough-legged Hawk * 2/21 2/26 3/5 3/21 4/9
Horned Lark ** 2/17 2/24 3/6 3/20 After Jun 30
Red-throated Loon * 2/21 2/26 3/7 4/20 4/30
Common Goldeneye *** 2/20 2/26 3/8 3/24 4/23
Snow Goose ** 2/15 2/25 3/9 3/26 4/13
Greater Scaup ** 2/20 2/27 3/9 4/18 4/30
Herring Gull *** 2/21 2/27 3/9 4/18 6/6
American Black Duck *** 2/20 2/26 3/10 4/16 4/26
Bald Eagle * 2/19 2/26 3/10 5/26 6/7
Northern Pintail ** 2/16 2/26 3/11 3/27 4/22
Canvasback ** 2/19 2/27 3/11 3/27 4/25
Tundra Swan ** 2/19 2/27 3/12 3/30 4/17
Redhead ** 2/19 2/27 3/12 3/27 4/28
Common Merganser *** 2/19 2/27 3/12 4/16 4/29
Ring-billed Gull *** 2/20 2/27 3/13 4/18 4/28
Red-breasted Merganser ** 2/20 2/27 3/14 4/21 5/5
American Wigeon *** 2/17 2/27 3/16 4/14 4/28
Gadwall ** 2/19 2/28 3/17 4/18 5/2
Hooded Merganser *** 2/20 3/2 3/18 4/8 4/24

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Common Redpoll * - 2/2 2/15 3/9 5/2
Snow Bunting * - - Before Feb 1 3/10 4/5
Black Scoter * 2/23 2/27 3/5 3/18 6/1
Long-tailed Duck * 2/22 2/26 3/5 3/18 4/26
Horned Lark * 2/17 2/24 3/6 3/20 After Jun 30
Great Cormorant * 2/24 2/27 3/4 3/20 4/24

Gulf Coast and Southeast

A reasonably quiet start is in store for most of the region, as a cool airmass pushing through the region will generally stall most movements. Locally light to moderate flights will occur, primarily west of the Mississippi River, through the weekend. There is also a chance for an early fallout or concentration event in Texas, particularly on Sunday after marginal and locally favorable conditions in Central America allow some nocturnal departures to take place on Saturday night; the departing migrants will encounter precipitation over the Gulf of Mexico, so watching carefully for early migrant shorebirds, waterbirds, and passerines in coastal stopover habitat beginning Sunday morning might yield some interesting numbers of downed migrants. As the cool airmass responsible for this frontal boundary remains in the region, most movements will remain local and light. But Tuesday night, conditions ameliorate in parts of Texas, where moderate movements are likely. By Wednesday these begin to intensify, and by Thursday, more favorable migration conditions will have spread east to spawn widespread moderate and locally heavy movements. Precipitation forecast for the end of the week may create another potential for fallout and concentrations, particularly in coastal Texas on Friday.

Yellow-throated Vireo. Sig Olsen/Macaulay Library. eBird S35008524.

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Laughing Gull *** 2/20 4/6 4/17 5/2 5/12
Caspian Tern * 2/21 4/5 4/14 5/3 5/16
Dunlin * 2/22 4/5 4/20 5/24 6/7
Sanderling * 2/23 4/5 4/17 6/1 6/12
Ruddy Turnstone * 2/24 4/10 4/25 5/28 6/12
Willet ** 2/25 4/6 4/16 5/2 5/12
Royal Tern ** 2/25 4/5 4/16 5/1 5/11
Yellow-crowned Night-Heron ** 2/26 4/8 5/1 5/11 5/17
Black-bellied Plover * 2/27 4/11 4/24 5/13 5/30
Marbled Godwit * 2/27 4/2 4/13 4/30 5/10
Yellow-throated Warbler *** 2/27 3/22 4/10 4/24 After Jun 30
Least Sandpiper ** 2/28 4/20 5/1 5/18 5/29
Short-billed Dowitcher * 2/28 4/7 4/19 5/7 5/21
Long-billed Dowitcher * 2/28 4/11 4/21 5/7 5/18
Lesser Yellowlegs ** 2/28 4/11 4/23 5/12 5/24
Brown-headed Cowbird *** 3/1 3/17 4/30 5/15 After Jun 30
American Golden-Plover ** 3/2 3/14 3/31 4/20 5/15
Black-bellied Whistling-Duck *** 3/3 3/16 4/23 5/6 5/15
Piping Plover * 3/3 4/5 4/15 5/2 5/11
Northern Rough-winged Swallow *** 3/3 3/18 4/27 After Jun 30 -
Barn Swallow *** 3/3 3/21 5/2 5/17 5/27
Black-and-white Warbler *** 3/3 4/15 4/25 5/10 5/21
Black-necked Stilt *** 3/4 3/16 4/19 5/4 5/14
Pectoral Sandpiper ** 3/4 3/15 4/29 5/18 5/29
White-eyed Vireo *** 3/4 3/24 4/16 After Jun 30 -
Black-chinned Hummingbird *** 3/5 3/16 5/5 5/21 6/1
Louisiana Waterthrush *** 3/8 3/19 4/5 4/16 6/2
Yellow-throated Vireo *** 3/12 3/30 4/21 After Jun 30 -
Cliff Swallow *** 3/14 3/29 5/10 5/21 After Jun 30
Blue-gray Gnatcatcher *** 3/14 3/27 4/10 4/21 After Jun 30
Ruby-throated Hummingbird *** 3/15 4/6 4/27 5/14 5/26
Ash-throated Flycatcher * 3/15 4/6 5/25 6/7 6/14
Scissor-tailed Flycatcher *** 3/15 3/27 5/9 5/24 6/2
Lark Sparrow ** 3/16 4/8 5/3 5/20 6/3
Swainson's Hawk *** 3/17 3/29 4/16 5/2 5/19
Gull-billed Tern ** 3/18 4/3 4/19 5/2 5/11
Broad-winged Hawk *** 3/19 3/29 4/13 4/25 After Jun 30
Sandwich Tern ** 3/20 4/5 4/18 5/2 5/11
House Wren ** 3/20 3/30 4/12 5/1 5/21
White-throated Sparrow *** 3/20 3/30 4/9 4/30 5/11

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Chipping Sparrow ** - 2/2 3/29 4/11 5/18
Brown Pelican * 2/20 2/27 4/14 4/30 5/10
Osprey *** 2/19 2/27 3/13 4/24 5/5
Long-billed Curlew * 2/19 2/27 3/13 4/27 5/13
Tree Swallow *** 2/19 2/28 3/18 4/28 5/25
Western Sandpiper * 2/22 3/2 4/10 5/19 6/1
Purple Martin ** 2/2 3/2 6/18 After Jun 30 -
Cedar Waxwing ** 2/21 3/2 3/28 5/20 5/29
Vesper Sparrow * 2/23 3/2 3/14 5/1 5/19
Spotted Towhee * 2/21 3/2 3/19 4/27 5/9
Blue-winged Teal *** 2/20 3/4 4/7 5/4 5/26
Greater Yellowlegs * 2/23 3/4 4/5 5/5 5/21
Blue-headed Vireo * 2/24 3/4 4/8 5/15 5/26
Ruby-crowned Kinglet ** 2/25 3/4 3/24 4/20 5/4
Lincoln's Sparrow ** 2/24 3/6 4/15 5/6 5/19
Wilson's Plover * 2/27 3/10 4/21 5/5 5/13
Hermit Thrush * 3/3 3/10 3/20 4/10 4/25
Couch's Kingbird * 2/27 3/11 4/3 5/7 5/20
Northern Parula *** 2/21 3/11 4/19 After Jun 30 -
Golden-cheeked Warbler * 3/3 3/12 3/27 4/4 6/13
American Golden-Plover * 3/2 3/14 3/31 4/20 5/15
Pectoral Sandpiper * 3/4 3/15 4/29 5/18 5/29
Black-bellied Whistling-Duck ** 3/3 3/16 4/23 5/6 5/15
Black-necked Stilt *** 3/4 3/16 4/19 5/4 5/14
Black-chinned Hummingbird ** 3/5 3/16 5/5 5/21 6/1
Brown-headed Cowbird *** 3/1 3/17 4/30 5/15 After Jun 30
Northern Rough-winged Swallow *** 3/3 3/18 4/27 After Jun 30 -
Louisiana Waterthrush ** 3/8 3/19 4/5 4/16 6/2

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Northern Pintail ** - - Before Feb 1 3/13 3/24
Rufous Hummingbird * - - Before Feb 1 3/31 4/14
Yellow-bellied Sapsucker *** - - Before Feb 1 3/31 4/20
Brown Creeper * - - Before Feb 1 3/30 4/11
Fox Sparrow * - - Before Feb 1 3/18 4/1
Dark-eyed Junco *** - 2/2 2/16 4/3 4/13
Pine Siskin * - 2/2 2/17 5/11 5/24
Song Sparrow *** 2/20 2/22 2/26 3/29 4/15
Redhead ** 2/19 2/23 3/1 3/16 3/25
Ring-necked Duck *** 2/20 2/24 3/2 3/19 4/1
Sandhill Crane ** 2/18 2/23 3/2 3/18 3/29
Harris's Sparrow * 2/20 2/24 3/2 3/18 5/6
American Wigeon ** 2/21 2/25 3/3 3/19 4/18
Bufflehead ** 2/22 2/26 3/3 3/26 4/14
Ruddy Duck ** 2/21 2/25 3/3 3/17 4/26
Sharp-shinned Hawk * 2/24 2/27 3/3 4/25 5/11
Ring-billed Gull *** 2/22 2/25 3/3 3/19 4/28
American White Pelican ** 2/20 2/25 3/4 3/22 4/27
Rusty Blackbird * 2/26 2/28 3/4 3/25 4/11
Gadwall *** 2/21 2/26 3/5 3/22 4/21
Lesser Scaup *** 2/20 2/25 3/5 3/21 4/17
American Kestrel *** 2/21 2/26 3/5 3/23 4/11
Green-winged Teal ** 2/20 2/26 3/6 4/15 4/26
Northern Harrier *** 2/22 2/27 3/6 4/22 5/6
Herring Gull * 2/22 2/27 3/6 4/26 5/8
Eastern Phoebe *** 2/19 2/25 3/6 3/20 3/31
Pied-billed Grebe *** 2/20 2/26 3/7 4/19 5/1
Horned Grebe * 2/22 2/27 3/7 3/24 4/14
Cinnamon Teal * 2/2 2/14 3/8 4/17 5/8
Northern Shoveler ** 2/22 2/27 3/8 4/23 5/21
Red-breasted Merganser * 2/20 2/26 3/8 4/21 5/3
American Bittern * 2/22 2/27 3/8 4/29 5/14
Bald Eagle ** 2/22 2/28 3/8 3/24 5/21
Belted Kingfisher *** 2/22 2/27 3/8 4/18 4/29
Golden-crowned Kinglet ** 2/24 3/1 3/8 3/29 4/14
Yellow-rumped Warbler *** 2/20 2/26 3/8 5/1 5/16
American Coot *** 2/20 2/27 3/9 4/22 5/10
Forster's Tern * 2/24 3/1 3/9 5/3 5/17
Winter Wren * 2/28 3/4 3/9 4/2 4/16
Great Blue Heron *** 2/21 2/27 3/10 3/21 5/26
Glossy Ibis * 2/20 2/27 3/10 3/25 4/24
Common Gallinule * 2/20 2/27 3/10 4/30 5/9
Wilson's Snipe ** 2/22 2/28 3/10 4/18 5/3
Bonaparte's Gull * 2/26 3/2 3/10 4/8 4/24
Palm Warbler *** 2/21 2/27 3/10 5/2 5/15
Common Loon * 3/1 3/4 3/11 4/18 5/3
Double-crested Cormorant *** 2/21 2/27 3/11 4/20 5/4
Northern Flicker *** 2/23 3/1 3/11 4/3 4/18
Cooper's Hawk * 2/23 3/2 3/12 4/27 5/19
Savannah Sparrow *** 2/23 3/1 3/12 5/8 5/21
Swamp Sparrow ** 2/24 3/2 3/12 4/25 5/8
Osprey *** 2/19 2/27 3/13 4/24 5/5
Long-billed Curlew * 2/19 2/27 3/13 4/27 5/13
Vesper Sparrow * 2/23 3/2 3/14 5/1 5/19
Tree Swallow ** 2/19 2/28 3/18 4/28 5/25
Spotted Towhee * 2/21 3/2 3/19 4/27 5/9
Hermit Thrush *** 3/3 3/10 3/20 4/10 4/25

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Snow Goose * - - Before Feb 1 2/3 3/22
Canvasback * - - Before Feb 1 2/3 3/24
Hooded Merganser *** - - Before Feb 1 2/3 3/25
American Pipit ** - - Before Feb 1 2/3 3/25
Orange-crowned Warbler *** - - Before Feb 1 2/3 5/11
Purple Finch * - 2/2 2/16 2/28 4/18
American Robin *** - 2/2 2/19 3/12 5/24
Northern Pintail ** - - Before Feb 1 3/13 3/24
Redhead ** 2/19 2/23 3/1 3/16 3/25
Ruddy Duck ** 2/21 2/25 3/3 3/17 4/26
Sandhill Crane *** 2/18 2/23 3/2 3/18 3/29
Fox Sparrow ** - - Before Feb 1 3/18 4/1
Harris's Sparrow * 2/20 2/24 3/2 3/18 5/6
American Wigeon ** 2/21 2/25 3/3 3/19 4/18
Ring-necked Duck *** 2/20 2/24 3/2 3/19 4/1
Ring-billed Gull *** 2/22 2/25 3/3 3/19 4/28
Eastern Phoebe *** 2/19 2/25 3/6 3/20 3/31

Weekly mean spring nocturnal migration activity and direction of movement in the Gulf of Mexico region for the week of 9-15 March, 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

Generally unfavorable conditions will keep migrants grounded in most areas of the region, with some local exceptions in the central and southern Plains on Saturday and Sunday nights where more marginal conditions for migration will allow for light to perhaps moderate flights. A large cold air mass in the eastern half of the country will continue to inhibit movements in the eastern Plains, but hints of a change appear in the western Plains by early in the work week. More favorable southerly flow returns and by Tuesday night, light to locally heavy flights return as well as birds take advantage of this break in the poor conditions. These movements reach their greatest intensity on Wednesday night, as moderate to heavy flights occur in many areas.

Greater Yellowlegs. Rick Sammons/Macaulay Library. eBird S34995615.

Species on the Move

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Cinnamon Teal * 2/19 4/5 4/18 5/4 5/16
American White Pelican *** 2/21 3/31 4/13 After Jun 30 -
Horned Grebe ** 2/23 4/1 4/16 5/5 5/17
Northern Shoveler *** 2/25 3/19 4/13 5/7 After Jun 30
American Coot *** 2/25 4/2 4/18 5/7 5/22
Ruddy Duck *** 2/26 3/14 4/8 After Jun 30 -
Wood Duck *** 2/27 3/26 5/7 5/25 6/5
Wilson's Snipe ** 2/27 3/31 4/15 After Jun 30 -
Great Blue Heron *** 2/28 3/26 4/24 5/19 After Jun 30
Song Sparrow *** 3/1 3/16 4/1 4/15 4/25
Common Grackle ****! 3/2 3/16 5/24 6/10 6/24
Greater Yellowlegs *** 3/5 3/25 4/15 5/4 5/18
Baird's Sandpiper *** 3/10 3/26 4/22 5/18 6/4
Field Sparrow *** 3/10 4/2 4/26 5/9 5/17
Blue-winged Teal ****! 3/11 3/29 4/21 5/12 After Jun 30
Common Loon ** 3/13 3/24 4/9 5/9 After Jun 30
Turkey Vulture ****! 3/14 3/27 4/17 5/23 After Jun 30
Brown-headed Cowbird ****! 3/16 4/15 5/15 5/23 After Jun 30
Double-crested Cormorant ****! 3/17 3/29 4/14 5/1 After Jun 30
Purple Martin *** 3/19 4/7 5/9 After Jun 30 -
Tree Swallow *** 3/20 4/5 5/5 After Jun 30 -

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Redhead *** 2/15 2/26 3/13 3/27 After Jun 30
Ring-necked Duck *** 2/15 2/27 3/15 4/6 5/10
Northern Harrier *** 2/20 2/27 3/13 4/22 After Jun 30
Gadwall *** 2/18 2/28 3/26 After Jun 30 -
Golden-crowned Kinglet * 2/23 2/28 3/13 4/15 4/25
American Wigeon *** 2/16 3/1 3/24 4/20 After Jun 30
Lesser Scaup *** 2/18 3/2 3/31 4/20 After Jun 30
Bufflehead *** 2/20 3/3 3/21 4/13 5/10
Sandhill Crane *** 2/20 3/3 3/18 4/3 4/17
Green-winged Teal *** 2/18 3/6 3/29 4/21 5/12
Red-breasted Merganser * 2/22 3/6 3/21 4/11 4/27
Killdeer ****! 2/20 3/6 4/1 5/1 After Jun 30
American Pipit * 2/21 3/6 4/19 5/7 5/19
Fox Sparrow * 3/1 3/9 3/23 4/15 4/29
Ruddy Duck *** 2/26 3/14 4/8 After Jun 30 -
Song Sparrow *** 3/1 3/16 4/1 4/15 4/25
Common Grackle *** 3/2 3/16 5/24 6/10 6/24
Northern Shoveler *** 2/25 3/19 4/13 5/7 After Jun 30

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Brown Creeper * - - Before Feb 1 4/18 5/11
Dark-eyed Junco *** - 2/2 2/10 4/10 4/24
Rusty Blackbird * 2/17 2/23 3/3 3/17 4/21
Cackling Goose *** 2/19 2/25 3/5 3/19 3/31
Common Goldeneye *** 2/19 2/25 3/5 3/19 3/31
Hooded Merganser *** 2/20 2/25 3/5 3/17 4/27
Bald Eagle *** 2/19 2/24 3/5 3/19 3/30
Common Merganser *** 2/18 2/25 3/6 3/21 4/6
Lapland Longspur * 2/24 2/27 3/6 3/20 3/31
Ross's Goose *** 2/16 2/24 3/7 3/20 3/29
Northern Shrike * 2/21 2/26 3/7 3/23 4/11
American Tree Sparrow *** 2/21 2/27 3/7 3/24 4/11
Greater White-fronted Goose *** 2/17 2/24 3/8 3/20 3/30
Rough-legged Hawk *** 2/21 2/27 3/8 3/22 4/5
Snow Goose *** 2/17 2/25 3/9 3/22 4/2
American Woodcock * 2/16 2/25 3/10 3/23 4/3
Northern Pintail ** 2/15 2/24 3/11 After Jun 30 -
Redhead *** 2/15 2/26 3/13 3/27 After Jun 30
Northern Harrier *** 2/20 2/27 3/13 4/22 After Jun 30
Golden-crowned Kinglet * 2/23 2/28 3/13 4/15 4/25
Ring-necked Duck *** 2/15 2/27 3/15 4/6 5/10
Sandhill Crane *** 2/20 3/3 3/18 4/3 4/17

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Hooded Merganser *** 2/20 2/25 3/5 3/17 4/27
Rusty Blackbird * 2/17 2/23 3/3 3/17 4/21
Cackling Goose *** 2/19 2/25 3/5 3/19 3/31
Common Goldeneye *** 2/19 2/25 3/5 3/19 3/31
Bald Eagle *** 2/19 2/24 3/5 3/19 3/30
Greater White-fronted Goose *** 2/17 2/24 3/8 3/20 3/30
Ross's Goose *** 2/16 2/24 3/7 3/20 3/29
Lapland Longspur ** 2/24 2/27 3/6 3/20 3/31

West

Light to moderate movements will be scattered through the Rockies and Pacific Northwest to kick off the period, with precipitation responsible for this scattering and shutting down movements where it passes. Sunday night sees the beginning of a new pattern, with favorable migration conditions building in the Pacific Northwest for light to moderate flights and gradually expanding through the Great Basin and Rockies on Monday night to most of the region by Tuesday night. Tuesday and Wednesday nights will see the greatest extents of light to moderate flights across the region, including some locally heavy flights in the southern Rockies and along the eastern fringe of the region. To end the period, movements are again more locally distributed, primarily in the Pacific Northwest and northern Rockies, as favorable migration conditions will be more restricted to these locations.

Scott’s Oriole. Emily Tornga/Macaulay Library. eBird S35048755.

Species on the Move

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
American White Pelican * 2/19 4/4 5/9 5/25 6/3
White-throated Swift * 2/20 4/3 6/3 After Jun 30 -
Brant * 2/21 4/11 4/20 5/6 5/17
Violet-green Swallow *** 2/21 4/27 6/22 After Jun 30 -
Brewer's Blackbird ** 2/24 4/12 6/3 After Jun 30 -
Cassin's Kingbird * 2/28 4/13 5/6 5/24 6/5
Rufous Hummingbird *** 3/2 3/18 4/12 5/11 5/26
Broad-billed Hummingbird ** 3/3 3/13 3/29 6/6 6/14
Bell's Vireo ** 3/7 3/18 4/26 6/3 6/12
Lucy's Warbler *** 3/7 3/16 4/2 6/5 6/14
Hooded Oriole *** 3/9 3/22 4/23 5/25 6/8
Scott's Oriole * 3/10 3/24 4/28 6/2 6/13
Pacific-slope Flycatcher *** 3/14 4/18 6/3 After Jun 30 -
Orange-crowned Warbler *** 3/15 4/8 4/28 5/16 After Jun 30
Black-chinned Hummingbird *** 3/15 4/2 5/16 6/1 6/11
Western Kingbird *** 3/17 4/29 5/17 6/1 6/12
Cliff Swallow *** 3/19 4/26 After Jun 30 - -

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Tree Swallow *** 2/14 2/26 5/12 5/29 6/11
Yellow-rumped Warbler * 2/21 2/26 4/17 5/17 5/29
Cinnamon Teal ** 2/17 2/27 4/20 5/14 6/15
Northern Shoveler * 2/21 2/27 4/9 4/28 6/2
Northern Rough-winged Swallow *** 2/14 2/27 5/8 5/23 6/4
Gadwall * 2/21 2/28 4/14 5/22 After Jun 30
Mountain Bluebird * 2/20 3/3 4/2 4/16 4/24
Cooper's Hawk * 2/20 3/7 3/29 5/9 5/28
Broad-billed Hummingbird * 3/3 3/13 3/29 6/6 6/14
Lucy's Warbler ** 3/7 3/16 4/2 6/5 6/14
Rufous Hummingbird ** 3/2 3/18 4/12 5/11 5/26
Bell's Vireo * 3/7 3/18 4/26 6/3 6/12

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Sharp-shinned Hawk * - - Before Feb 1 5/5 5/18
Bald Eagle ** - - Before Feb 1 3/18 4/4
Rough-legged Hawk * - - Before Feb 1 3/29 4/26
Varied Thrush * - 2/2 2/18 4/5 4/25
Dark-eyed Junco *** - 2/2 2/21 4/8 4/24
Glaucous-winged Gull ** 2/24 2/26 3/2 3/19 5/2
Canvasback * 2/25 2/27 3/3 4/18 5/1
Northern Pintail ** 2/20 2/25 3/4 3/20 5/2
Barrow's Goldeneye * 2/26 2/28 3/4 4/14 4/26
Hooded Merganser * 2/22 2/26 3/4 3/20 4/30
Cackling Goose * 2/22 2/26 3/5 3/19 5/13
Common Goldeneye *** 2/21 2/26 3/5 4/15 4/28
Tundra Swan * 2/20 2/26 3/6 3/25 4/9
Common Merganser ** 2/21 2/26 3/6 3/19 5/5
Ruddy Duck ** 2/22 2/26 3/6 5/21 6/3
Ring-billed Gull *** 2/19 2/25 3/6 3/20 4/1
Greater Scaup * 2/25 3/1 3/7 5/5 5/23
Bufflehead *** 2/21 2/26 3/7 4/29 5/18
Pied-billed Grebe ** 2/22 2/27 3/7 4/21 5/31
Eurasian Wigeon * 2/24 3/1 3/8 3/27 4/27
Horned Grebe * 2/25 3/1 3/8 5/1 5/15
American Coot ** 2/21 2/27 3/8 4/27 6/5
Ruby-crowned Kinglet *** 2/23 3/1 3/10 4/22 5/18
American Wigeon *** 2/20 2/27 3/11 4/20 5/16
Green-winged Teal ** 2/20 2/27 3/11 4/30 5/16
Ring-necked Duck ** 2/21 2/27 3/11 4/26 5/16
Surf Scoter * 2/25 3/2 3/11 5/6 5/22
Black Turnstone * 2/26 3/3 3/11 5/2 5/12
Lesser Scaup ** 2/20 2/27 3/12 4/25 5/22

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Snow Goose * - - Before Feb 1 2/3 5/1
Mew Gull * - - Before Feb 1 2/3 3/28
Herring Gull ** - - Before Feb 1 2/3 3/26
Merlin * - - Before Feb 1 2/3 5/5
Bald Eagle ** - - Before Feb 1 3/18 4/4
Cackling Goose * 2/22 2/26 3/5 3/19 5/13
Common Merganser ** 2/21 2/26 3/6 3/19 5/5
Glaucous-winged Gull * 2/24 2/26 3/2 3/19 5/2
Northern Pintail ** 2/20 2/25 3/4 3/20 5/2
Hooded Merganser ** 2/22 2/26 3/4 3/20 4/30
Ring-billed Gull *** 2/19 2/25 3/6 3/20 4/1

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Farnsworth and Van Doren

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