Common Loon, © Ian Davies
Continental Summary
Favorable conditions begin and end the period in the West where light to moderate flights will feature Common Loon, Gadwall, Turkey Vulture, Ruby-crownd Kinglet, Yellow Warbler, and Lincoln’s Sparrow, while the non coastal East sees an extended period of favorable conditions bring moderate to heavy flights featuring Sharp-shinned Hawk, Northern Flicker, Blue-headed Vireo, Nashville Warbler, Pine Warbler, Palm Warbler, Lincoln’s Sparrow, and Western Meadowlark.
Wondering what species are migrating through right now? Check out our analysis for the past 7 days.
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 blue will experience conditions that are favorable for migration, and areas where blue 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 !
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 Northeast
An extended period of favorable northeasterly flow will persist across much of the region from the weekend through Wednesday or Thursday. These nights will feature moderate to locally very heavy flights. However, though many coastal areas will experience these favorable winds, they will not see rain free skies for the entirety of this period, as a strong low pressure center, coupled with winds and rains associated with the (at present) offshore passage of Joaquin, will shut down movements. Of course, birders at or near the coast who can safely visit coastal locations will be in for an interesting mix of near-shore and true pelagic sea watching from Friday through early in the work week. By Wednesday and Thursday, favorable conditions are limited mostly to coastal northern New England and the mid Atlantic states, as southerly flow builds into the region west of the Appalachians. The period ends will primarily unfavorable conditions for migration across the region.
Marsh Wren, © Ryan Schain
Species on the Move
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Northern Shoveler
**
8/9
10/15
11/10
12/1
12/16
Northern Pintail
**
9/1
10/3
10/31
11/20
12/11
Great Cormorant
*
9/3
11/12
After Dec 31
-
-
Song Sparrow
NA
9/8
10/10
10/20
11/1
-
American Wigeon
**
9/9
10/5
11/1
11/23
12/19
Pied-billed Grebe
***
9/12
10/10
10/31
11/22
12/11
Dunlin
**
9/15
10/9
10/31
11/20
12/6
Saltmarsh Sparrow
NA
9/15
10/10
10/20
11/5
11/15
Snow Goose
*
9/18
11/21
12/26
-
-
Rusty Blackbird
**
9/18
10/3
10/23
11/10
11/25
American Black Duck
***
9/19
10/15
11/28
12/14
-
Hermit Thrush
***
9/20
10/3
10/19
11/5
11/17
Field Sparrow
***
9/21
10/2
10/16
11/3
11/15
Red-winged Blackbird
***
9/21
10/3
10/19
11/7
11/23
Purple Finch
***
9/21
10/6
10/24
11/11
11/25
Surf Scoter
**
9/23
10/11
11/8
11/26
12/8
Vesper Sparrow
*
9/24
10/6
10/21
11/7
11/18
Pine Siskin
***
9/24
10/9
10/29
11/14
11/27
American Coot
***
9/26
10/14
11/6
11/26
12/20
Greater White-fronted Goose
*
9/27
10/13
After Dec 31
-
-
American Woodcock
*
9/27
10/12
10/26
11/13
11/25
Brant
**
9/28
10/11
11/3
-
-
Dark-eyed Junco
****!
9/28
10/14
11/2
-
-
Ruddy Duck
***
9/30
10/17
11/10
11/30
-
Fox Sparrow
***
9/30
10/17
11/8
11/26
12/10
White-winged Scoter
**
10/1
10/19
11/10
11/26
12/8
Common Grackle
***
10/1
10/8
10/18
11/8
11/23
Redhead
*
10/2
10/18
11/12
-
-
Horned Lark
*
10/2
10/25
After Dec 31
-
-
Gadwall
***
10/3
10/19
11/13
11/30
-
Northern Goshawk
*
10/3
10/16
10/30
11/16
11/28
Northern Saw-whet Owl
*
10/3
10/16
11/1
11/15
11/24
Ring-necked Duck
***
10/5
10/21
11/12
11/27
12/12
Greater Scaup
*
10/6
10/20
12/23
After Dec 31
-
Red-necked Grebe
*
10/6
10/19
11/7
11/22
12/8
Canvasback
*
10/7
10/21
12/17
-
-
Golden Eagle
*
10/8
10/19
11/2
11/16
11/27
Evening Grosbeak
*
10/8
10/20
11/4
11/18
11/28
Lesser Scaup
***
10/9
10/24
11/16
12/1
-
Common Loon
***
10/9
10/25
11/14
11/30
12/12
Northern Shrike
*
10/9
10/22
After Dec 31
-
-
Peaking Arrivals
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Green-winged Teal
**
8/8
8/22
10/27
11/22
12/10
Bald Eagle
*
Before July 1
9/2
11/6
-
-
Red-breasted Nuthatch
**
8/9
9/9
10/2
-
-
Sharp-shinned Hawk
***
8/26
9/10
10/7
11/8
11/22
Cooper's Hawk
***
8/3
9/10
10/7
11/2
11/16
Lapland Longspur
*
9/3
9/15
11/10
-
-
Clay-colored Sparrow
*
9/5
9/17
10/4
10/21
11/3
Palm Warbler
***
9/4
9/18
10/5
10/22
11/4
Blue-headed Vireo
***
9/6
9/19
10/4
10/21
11/2
Lincoln's Sparrow
***
9/7
9/19
10/5
10/22
11/2
Peregrine Falcon
**
9/6
9/20
10/5
10/22
11/3
Sedge Wren
*
9/1
9/20
10/5
10/24
11/1
Marsh Wren
***
9/1
9/20
10/5
10/24
-
American Pipit
**
9/5
9/21
10/22
11/17
12/4
Yellow-bellied Sapsucker
***
9/10
9/22
10/7
10/21
10/31
Harris's Sparrow
*
9/8
9/22
10/12
10/28
11/10
Monk Parakeet
*
8/24
9/23
11/4
12/10
-
Eastern Towhee
***
9/12
9/23
10/6
10/25
11/7
Savannah Sparrow
***
9/10
9/24
10/12
10/29
11/12
Eastern Bluebird
***
9/9
9/25
10/19
11/11
11/29
American Robin
***
9/11
9/25
10/13
11/9
11/26
Orange-crowned Warbler
**
9/14
9/25
10/10
10/25
11/5
Nelson's Sparrow
*
9/14
9/25
10/10
10/25
11/4
Northern Harrier
**
8/1
9/26
10/20
11/10
11/27
Yellow-rumped Warbler
****!
9/16
9/27
10/13
10/28
11/9
Chipping Sparrow
***
9/18
9/27
10/9
10/30
11/13
Brown Creeper
***
9/15
9/28
10/17
10/30
11/9
Winter Wren
***
9/14
9/28
10/17
10/31
11/12
Ruby-crowned Kinglet
****!
9/16
9/28
10/14
10/30
11/11
Swamp Sparrow
***
9/16
9/28
10/14
10/30
11/12
Le Conte's Sparrow
*
9/17
9/29
10/15
10/31
11/12
White-throated Sparrow
****!
9/16
9/29
10/19
11/2
11/13
Eastern Meadowlark
**
9/17
9/29
10/16
11/2
11/17
Golden-crowned Kinglet
***
9/18
9/30
10/18
11/2
11/15
White-crowned Sparrow
***
9/19
9/30
10/15
10/30
11/10
Cackling Goose
*
9/12
10/1
12/8
-
-
Wilson's Snipe
*
8/6
10/1
10/16
11/2
11/19
Field Sparrow
***
9/21
10/2
10/16
11/3
11/15
Northern Pintail
*
9/1
10/3
10/31
11/20
12/11
Hermit Thrush
***
9/20
10/3
10/19
11/5
11/17
Red-winged Blackbird
***
9/21
10/3
10/19
11/7
11/23
Rusty Blackbird
**
9/18
10/3
10/23
11/10
11/25
American Wigeon
**
9/9
10/5
11/1
11/23
12/19
Vesper Sparrow
*
9/24
10/6
10/21
11/7
11/18
Purple Finch
***
9/21
10/6
10/24
11/11
11/25
Common Grackle
**
10/1
10/8
10/18
11/8
11/23
Dunlin
*
9/15
10/9
10/31
11/20
12/6
Pine Siskin
***
9/24
10/9
10/29
11/14
11/27
Beginning Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Yellow-billed Cuckoo
*
-
-
Before July 1
10/3
10/17
Killdeer
***
-
Before July 1
8/2
10/28
11/26
Yellow-crowned Night-Heron
*
-
Before July 1
8/3
10/8
10/28
Chimney Swift
***
-
-
8/5
10/10
10/25
Snowy Egret
**
-
Before July 1
8/7
10/15
11/3
Great Blue Heron
***
-
Before July 1
8/10
10/19
12/8
Tricolored Heron
*
7/14
7/26
8/11
10/7
10/22
Great Egret
***
Before July 1
7/11
8/12
10/19
11/6
Laughing Gull
**
Before July 1
7/15
8/13
11/12
12/5
Osprey
***
-
Before July 1
8/16
10/15
11/8
Wood Duck
**
Before July 1
7/6
8/18
10/31
11/21
Royal Tern
*
7/12
7/31
8/25
11/10
11/25
Double-crested Cormorant
***
-
-
9/5
11/14
12/7
Blue-winged Teal
**
8/4
8/18
9/9
10/22
11/6
Red-headed Woodpecker
*
8/22
9/1
9/13
10/2
10/14
Ovenbird
***
8/11
8/26
9/13
10/2
10/14
Black-and-white Warbler
***
8/10
8/28
9/13
10/2
10/14
House Wren
***
8/28
9/4
9/15
10/7
10/23
Scarlet Tanager
***
8/23
9/2
9/15
10/3
10/15
Tennessee Warbler
***
8/16
8/30
9/16
10/4
10/18
Bay-breasted Warbler
***
8/22
9/2
9/16
10/2
10/13
Summer Tanager
*
8/25
9/3
9/16
10/3
10/15
Rose-breasted Grosbeak
***
8/26
9/5
9/16
10/3
10/14
Philadelphia Vireo
***
8/22
9/3
9/17
10/2
10/12
Gray Catbird
***
8/28
9/6
9/17
10/9
10/24
Magnolia Warbler
***
8/20
9/1
9/17
10/3
10/15
Broad-winged Hawk
***
8/26
9/5
9/18
10/3
10/14
Common Yellowthroat
***
8/25
9/3
9/18
10/9
10/24
Swainson's Thrush
***
8/24
9/4
9/19
10/5
10/16
Connecticut Warbler
*
8/25
9/5
9/19
10/5
10/16
Cape May Warbler
***
8/22
9/4
9/19
10/5
10/17
Belted Kingfisher
***
Before July 1
7/27
9/20
10/14
-
Northern Parula
***
8/25
9/6
9/20
10/6
10/18
Black-throated Green Warbler
***
8/24
9/5
9/20
10/7
10/19
Sora
*
8/12
8/28
9/21
10/16
10/30
Brown Thrasher
***
8/27
9/7
9/21
10/7
10/20
Nashville Warbler
***
8/22
9/5
9/21
10/9
10/23
Red-shouldered Hawk
*
8/24
9/5
9/22
11/13
11/22
Pine Warbler
***
8/22
9/5
9/22
10/11
10/25
Gray-cheeked Thrush
**
8/29
9/8
9/23
10/8
10/19
Blackpoll Warbler
***
8/27
9/7
9/23
10/9
10/21
Black-throated Blue Warbler
***
8/22
9/6
9/23
10/12
10/26
Indigo Bunting
***
9/9
9/14
9/24
10/11
10/23
Parasitic Jaeger
*
8/23
9/6
9/25
11/15
11/30
Northern Flicker
***
8/28
9/9
9/26
10/13
10/30
Turkey Vulture
***
8/16
9/5
9/28
10/31
11/25
American Kestrel
**
8/27
9/10
9/28
10/19
11/5
Merlin
**
8/19
9/4
9/28
10/26
11/16
Blue Jay
***
8/25
9/8
9/28
10/16
-
Eastern Phoebe
***
9/4
9/16
9/30
10/20
11/3
Blue-headed Vireo
***
9/6
9/19
10/4
10/21
11/2
Clay-colored Sparrow
*
9/5
9/17
10/4
10/21
11/3
Peregrine Falcon
**
9/6
9/20
10/5
10/22
11/3
Sedge Wren
*
9/1
9/20
10/5
10/24
11/1
Marsh Wren
**
9/1
9/20
10/5
10/24
-
Palm Warbler
***
9/4
9/18
10/5
10/22
11/4
Lincoln's Sparrow
***
9/7
9/19
10/5
10/22
11/2
Eastern Towhee
***
9/12
9/23
10/6
10/25
11/7
Sharp-shinned Hawk
***
8/26
9/10
10/7
11/8
11/22
Cooper's Hawk
***
8/3
9/10
10/7
11/2
11/16
Yellow-bellied Sapsucker
***
9/10
9/22
10/7
10/21
10/31
Chipping Sparrow
***
9/18
9/27
10/9
10/30
11/13
Ending Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Northern Rough-winged Swallow
**
-
-
Before July 1
8/5
10/24
Yellow Warbler
***
-
-
Before July 1
8/18
10/7
Little Blue Heron
*
Before July 1
7/21
8/9
8/26
10/20
Common Tern
***
-
Before July 1
8/1
8/26
10/4
Black-crowned Night-Heron
*
-
Before July 1
7/31
8/27
10/30
Clapper Rail
*
-
Before July 1
8/1
8/28
10/29
Tree Swallow
***
-
-
Before July 1
8/30
11/10
Blue Grosbeak
*
Before July 1
7/18
8/5
8/31
10/17
Black-bellied Plover
*
7/20
8/1
8/20
9/3
12/1
Semipalmated Plover
***
7/1
7/25
8/17
9/8
10/4
Solitary Sandpiper
***
Before July 1
7/11
8/13
9/8
10/7
Greater Yellowlegs
**
-
Before July 1
8/20
9/11
11/28
Common Gallinule
*
-
Before July 1
7/26
9/12
11/2
Caspian Tern
**
Before July 1
7/17
8/20
9/14
10/20
Green Heron
***
-
Before July 1
8/13
9/15
10/7
Whimbrel
*
Before July 1
7/9
8/1
9/18
10/4
Forster's Tern
*
-
Before July 1
8/17
9/18
11/30
Eastern Whip-poor-will
*
8/16
8/21
8/30
9/19
10/2
Bobolink
**
8/5
8/16
8/31
9/19
10/15
Ruby-throated Hummingbird
***
7/30
8/14
8/28
9/21
10/5
Yellow-bellied Flycatcher
*
8/9
8/20
9/5
9/21
10/4
Mourning Warbler
*
8/4
8/15
9/1
9/21
10/7
Eastern Wood-Pewee
***
8/5
8/16
8/29
9/22
10/9
Least Flycatcher
***
8/7
8/18
9/3
9/22
10/5
Veery
***
8/13
8/22
9/5
9/22
10/5
Black Skimmer
*
-
Before July 1
7/23
9/22
10/21
Sanderling
**
-
Before July 1
9/1
9/23
10/6
Golden-winged Warbler
*
8/11
8/22
9/7
9/23
10/5
Pectoral Sandpiper
*
Before July 1
7/18
8/16
9/24
11/20
Yellow-throated Vireo
***
8/16
8/25
9/8
9/26
10/8
American Golden-Plover
**
8/11
8/23
9/10
9/27
10/13
Cedar Waxwing
***
-
Before July 1
8/17
9/27
11/26
Hooded Warbler
*
8/17
8/26
9/9
9/27
10/10
Blackburnian Warbler
***
8/10
8/23
9/8
9/27
10/9
Chestnut-sided Warbler
***
8/11
8/24
9/9
9/27
10/9
White-eyed Vireo
***
8/17
8/27
9/10
9/28
10/10
Red-eyed Vireo
***
8/15
8/25
9/7
9/28
10/13
Wood Thrush
**
8/23
8/30
9/11
9/28
10/15
Wilson's Warbler
***
8/15
8/26
9/11
9/28
10/9
Northern Waterthrush
***
7/28
8/24
9/10
9/30
10/12
American Redstart
***
8/12
8/27
9/11
9/30
10/12
Yellow-throated Warbler
*
8/19
8/29
9/12
9/30
10/12
Prairie Warbler
**
8/4
8/21
9/9
9/30
10/13
Sabine's Gull
*
8/22
9/2
9/16
10/1
10/10
Red-headed Woodpecker
**
8/22
9/1
9/13
10/2
10/14
Philadelphia Vireo
***
8/22
9/3
9/17
10/2
10/12
Ovenbird
***
8/11
8/26
9/13
10/2
10/14
Black-and-white Warbler
***
8/10
8/28
9/13
10/2
10/14
Bay-breasted Warbler
***
8/22
9/2
9/16
10/2
10/13
Broad-winged Hawk
***
8/26
9/5
9/18
10/3
10/14
Yellow-billed Cuckoo
**
-
-
Before July 1
10/3
10/17
Magnolia Warbler
***
8/20
9/1
9/17
10/3
10/15
Summer Tanager
*
8/25
9/3
9/16
10/3
10/15
Scarlet Tanager
***
8/23
9/2
9/15
10/3
10/15
Rose-breasted Grosbeak
***
8/26
9/5
9/16
10/3
10/14
Tennessee Warbler
***
8/16
8/30
9/16
10/4
10/18
Swainson's Thrush
***
8/24
9/4
9/19
10/5
10/16
Connecticut Warbler
*
8/25
9/5
9/19
10/5
10/16
Cape May Warbler
***
8/22
9/4
9/19
10/5
10/17
Northern Parula
***
8/25
9/6
9/20
10/6
10/18
Tricolored Heron
*
7/14
7/26
8/11
10/7
10/22
House Wren
***
8/28
9/4
9/15
10/7
10/23
Brown Thrasher
***
8/27
9/7
9/21
10/7
10/20
Black-throated Green Warbler
***
8/24
9/5
9/20
10/7
10/19
Yellow-crowned Night-Heron
*
-
Before July 1
8/3
10/8
10/28
Gray-cheeked Thrush
**
8/29
9/8
9/23
10/8
10/19
Gray Catbird
***
8/28
9/6
9/17
10/9
10/24
Nashville Warbler
***
8/22
9/5
9/21
10/9
10/23
Common Yellowthroat
***
8/25
9/3
9/18
10/9
10/24
Blackpoll Warbler
***
8/27
9/7
9/23
10/9
10/21
Gulf Coast and Southeast
Away from the immediate southeastern coastal Plain and Florida, a prolonged period of favorable conditions sees moderate to locally very heavy flights from the southern Appalachians west to Texas. These conditions persist through Wednesday before more southerly flow begins to dampen the exodus, first to the west of the Mississippi River valley on Wednesday, then farther east on Thursday. Note, however, that favorable conditions late in the period continue in Georgia and the Carolinas, where moderate to heavy flights will continue.
Rose-breasted Grosbeak, © Ian Davies
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Great Blue Heron
**
7/27
10/21
11/19
-
-
Black Vulture
**
8/25
10/15
After Dec 31
-
-
American Avocet
*
9/1
10/20
11/5
11/24
12/8
Blue-headed Vireo
*
9/1
10/18
12/18
After Dec 31
-
American Kestrel
***
9/9
10/7
11/14
-
-
American Bittern
*
9/12
10/14
11/25
-
-
Red-breasted Nuthatch
*
9/15
10/6
11/3
-
-
Marsh Wren
**
9/19
10/8
10/29
-
-
Wilson's Snipe
**
9/20
10/19
12/15
-
-
House Wren
***
9/21
10/8
10/27
11/11
-
Eastern Phoebe
****!
9/22
10/11
10/31
11/12
-
Tree Swallow
***
9/22
10/8
10/30
-
-
Lincoln's Sparrow
***
9/24
10/10
10/29
-
-
Red-winged Blackbird
***
9/24
10/13
11/7
11/19
11/30
Double-crested Cormorant
***
9/25
10/17
11/21
11/27
12/1
Nelson's Sparrow
*
9/25
10/8
10/25
-
-
Common Grackle
***
9/26
10/11
10/25
11/10
11/20
Northern Harrier
***
9/26
10/21
11/17
-
-
Painted Bunting
*
9/26
10/3
10/13
10/29
11/8
Yellow-bellied Sapsucker
***
9/26
10/10
12/17
After Dec 31
-
Herring Gull
**
9/29
12/30
After Dec 31
-
-
Saltmarsh Sparrow
*
9/29
10/12
12/11
After Dec 31
-
Sedge Wren
**
9/30
10/14
12/18
-
-
Ruby-crowned Kinglet
****!
10/1
10/16
12/15
-
-
Eastern Meadowlark
***
10/2
10/16
11/3
11/14
-
Pied-billed Grebe
***
10/2
10/23
11/25
-
-
Virginia Rail
*
10/3
10/15
12/20
-
-
Western Meadowlark
*
10/3
10/19
11/10
11/26
12/8
Swamp Sparrow
***
10/4
10/16
12/16
-
-
American Coot
***
10/5
10/23
11/20
-
-
American White Pelican
***
10/5
10/24
11/19
-
-
Spotted Towhee
**
10/5
10/18
12/16
-
-
Orange-crowned Warbler
***
10/6
10/20
11/12
-
-
Red-tailed Hawk
***
10/6
10/22
-
-
-
Savannah Sparrow
***
10/6
10/19
12/20
-
-
Yellow-rumped Warbler
****!
10/6
10/19
12/20
After Dec 31
-
Golden-crowned Kinglet
***
10/7
10/19
12/14
-
-
White-crowned Sparrow
***
10/7
10/20
12/14
-
-
Winter Wren
***
10/7
10/18
12/14
-
-
Brown Creeper
**
10/8
10/21
12/17
-
-
Franklin's Gull
**
10/8
10/20
11/5
11/21
12/4
Sandhill Crane
**
10/8
10/27
12/15
After Dec 31
-
Song Sparrow
***
10/8
10/20
12/16
After Dec 31
-
Vesper Sparrow
***
10/8
10/20
12/18
-
-
White-throated Sparrow
****!
10/8
10/20
12/15
-
-
American Wigeon
***
10/9
10/26
11/21
-
-
Dunlin
***
10/9
10/23
11/14
11/26
12/7
Le Conte's Sparrow
*
10/9
12/3
12/16
-
-
Peaking Arrivals
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Black-bellied Plover
*
7/23
8/6
11/2
-
-
Caspian Tern
*
7/26
8/13
10/26
11/23
-
Blue-winged Teal
**
8/8
8/25
11/2
-
-
Pine Warbler
***
8/13
9/6
10/3
-
-
Sora
*
8/29
9/10
12/18
-
-
Cooper's Hawk
**
7/29
9/11
10/24
11/11
11/22
Nashville Warbler
***
8/30
9/13
10/4
10/26
11/15
Belted Kingfisher
***
8/12
9/14
10/26
-
-
Clay-colored Sparrow
*
9/2
9/15
10/4
10/21
11/4
Eastern Towhee
**
9/7
9/15
10/21
11/8
11/22
Tennessee Warbler
***
8/31
9/15
10/3
10/22
11/5
Common Yellowthroat
***
9/2
9/16
10/5
10/23
11/6
Wood Thrush
**
9/3
9/16
10/2
10/19
10/31
Gray-cheeked Thrush
**
9/6
9/17
10/2
10/19
10/30
Merlin
**
9/3
9/17
10/11
11/1
11/18
Sharp-shinned Hawk
**
9/2
9/17
10/28
11/12
11/22
Bald Eagle
*
8/21
9/18
After Dec 31
-
-
Brown Thrasher
***
9/3
9/18
10/5
10/24
11/7
Rose-breasted Grosbeak
***
9/7
9/19
10/4
10/21
11/1
Black-throated Blue Warbler
***
9/5
9/20
10/6
10/25
11/7
Northern Mockingbird
***
9/6
9/20
10/12
-
-
Scissor-tailed Flycatcher
**
9/6
9/20
10/5
11/1
11/19
Bay-breasted Warbler
*
9/7
9/21
10/7
10/25
11/6
Black-throated Green Warbler
***
9/7
9/22
10/8
10/27
11/9
Peregrine Falcon
**
9/9
9/22
10/8
10/23
11/3
Gray Catbird
***
9/12
9/24
10/10
10/26
11/7
Blackpoll Warbler
*
9/13
9/25
10/10
10/26
11/6
Indigo Bunting
***
9/15
9/25
10/9
10/26
11/8
Brown-headed Cowbird
**
9/12
9/26
10/25
11/11
11/22
Northern Flicker
***
9/14
9/29
10/18
11/2
-
Palm Warbler
***
9/15
9/29
10/19
11/2
11/12
Painted Bunting
*
9/26
10/3
10/13
10/29
11/8
Red-breasted Nuthatch
*
9/15
10/6
11/3
-
-
American Kestrel
***
9/9
10/7
11/14
-
-
House Wren
***
9/21
10/8
10/27
11/11
-
Marsh Wren
**
9/19
10/8
10/29
-
-
Nelson's Sparrow
*
9/25
10/8
10/25
-
-
Tree Swallow
***
9/22
10/8
10/30
-
-
Beginning Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Ruby-throated Hummingbird
***
7/26
8/30
9/13
10/5
10/20
Swainson's Warbler
*
8/14
8/25
9/13
10/5
10/24
Summer Tanager
***
8/19
8/31
9/15
10/4
10/19
Worm-eating Warbler
**
8/9
8/29
9/15
10/4
10/17
Yellow-bellied Flycatcher
*
8/15
8/31
9/15
10/3
10/15
Yellow-throated Vireo
***
8/16
8/30
9/15
10/3
10/17
Acadian Flycatcher
**
8/20
9/1
9/16
10/5
10/18
Blue-winged Warbler
**
8/19
9/1
9/17
10/4
10/16
Chuck-will's-widow
*
8/15
8/31
9/17
10/6
10/20
Warbling Vireo
*
8/23
9/3
9/17
10/3
10/14
Red-headed Woodpecker
**
8/24
9/4
9/18
10/6
11/11
Eastern Wood-Pewee
***
8/16
9/1
9/19
10/12
10/29
Northern Waterthrush
***
8/19
9/3
9/19
10/7
10/21
Red-eyed Vireo
***
8/22
9/5
9/19
10/8
10/23
Wilson's Warbler
***
8/23
9/4
9/19
10/4
10/14
Chimney Swift
***
8/27
9/7
9/20
10/11
10/25
Hooded Warbler
***
8/3
9/3
9/20
10/11
10/27
White-eyed Vireo
***
8/19
9/3
9/20
10/11
10/30
Bobolink
*
8/21
9/4
9/21
10/9
10/23
Veery
**
8/28
9/7
9/21
10/5
10/16
Blackburnian Warbler
**
8/24
9/6
9/22
10/9
10/23
Chestnut-sided Warbler
***
8/25
9/6
9/22
10/10
10/23
Golden-winged Warbler
*
8/27
9/7
9/22
10/7
10/19
Northern Parula
***
8/7
9/3
9/23
10/17
11/2
Prairie Warbler
***
7/23
9/8
9/23
10/13
10/30
Broad-winged Hawk
**
8/28
9/9
9/25
10/13
11/1
Black-and-white Warbler
***
8/18
9/6
9/26
10/18
11/5
Black-billed Cuckoo
*
8/17
9/5
9/26
10/18
11/1
Yellow-throated Warbler
**
7/31
9/6
9/26
10/19
11/4
Ovenbird
***
8/26
9/9
9/27
10/16
11/2
Scarlet Tanager
***
8/31
9/12
9/27
10/15
10/28
American Redstart
***
8/29
9/11
9/28
10/16
10/30
Swainson's Hawk
*
-
-
9/28
10/23
11/19
Cape May Warbler
**
8/31
9/12
9/29
10/16
10/31
Swainson's Thrush
***
9/3
9/14
9/29
10/15
10/27
Magnolia Warbler
***
9/1
9/14
10/1
10/19
11/1
Gray-cheeked Thrush
**
9/6
9/17
10/2
10/19
10/30
Wood Thrush
**
9/3
9/16
10/2
10/19
10/31
Tennessee Warbler
***
8/31
9/15
10/3
10/22
11/5
Clay-colored Sparrow
*
9/2
9/15
10/4
10/21
11/4
Nashville Warbler
**
8/30
9/13
10/4
10/26
11/15
Rose-breasted Grosbeak
***
9/7
9/19
10/4
10/21
11/1
Brown Thrasher
***
9/3
9/18
10/5
10/24
11/7
Common Yellowthroat
***
9/2
9/16
10/5
10/23
11/6
Scissor-tailed Flycatcher
***
9/6
9/20
10/5
11/1
11/19
Black-throated Blue Warbler
***
9/5
9/20
10/6
10/25
11/7
Bay-breasted Warbler
*
9/7
9/21
10/7
10/25
11/6
Black-throated Green Warbler
***
9/7
9/22
10/8
10/27
11/9
Peregrine Falcon
**
9/9
9/22
10/8
10/23
11/3
Indigo Bunting
***
9/15
9/25
10/9
10/26
11/8
Ending Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Cliff Swallow
**
-
-
Before July 1
7/8
10/7
Least Bittern
*
-
-
Before July 1
8/1
10/18
Blue Grosbeak
**
-
-
Before July 1
8/26
11/1
Barn Swallow
***
-
Before July 1
8/8
9/8
11/5
Sandwich Tern
*
Before July 1
7/28
8/19
9/8
12/9
Semipalmated Plover
**
7/14
7/30
8/21
9/10
10/2
Spotted Sandpiper
***
Before July 1
7/19
8/17
9/12
10/3
Wilson's Phalarope
*
7/19
8/2
8/22
9/12
10/3
Solitary Sandpiper
**
-
Before July 1
8/17
9/13
10/5
Stilt Sandpiper
*
7/5
7/21
8/15
9/14
11/21
Black-necked Stilt
*
7/14
7/27
8/11
9/16
11/28
Gray Kingbird
*
-
-
8/14
9/16
10/11
Semipalmated Sandpiper
**
Before July 1
7/15
8/23
9/16
10/15
Common Nighthawk
***
8/10
8/18
8/28
9/19
10/4
Alder Flycatcher
*
8/4
8/17
9/3
9/20
10/4
Black-chinned Hummingbird
**
-
-
Before July 1
9/20
10/10
Brown-crested Flycatcher
*
8/16
8/23
9/1
9/20
10/2
Great Crested Flycatcher
***
8/11
8/20
9/1
9/20
10/5
Green Heron
***
-
-
Before July 1
9/20
10/9
Western Sandpiper
**
Before July 1
7/11
9/1
9/20
10/2
Black-bellied Whistling-Duck
*
-
Before July 1
8/6
9/21
12/6
Eastern Kingbird
***
-
-
7/4
9/21
10/7
Pectoral Sandpiper
**
Before July 1
7/26
8/18
9/22
10/8
White-rumped Sandpiper
*
8/8
8/20
9/5
9/22
10/5
Bell's Vireo
*
8/8
8/18
8/29
9/23
10/10
Olive-sided Flycatcher
**
8/6
8/19
9/5
9/23
10/7
Prothonotary Warbler
**
8/2
8/11
8/28
9/23
10/9
Baird's Sandpiper
*
7/8
7/28
8/20
9/24
10/9
Common Tern
*
Before July 1
7/20
8/22
9/24
11/9
Dickcissel
*
8/10
8/19
9/2
9/24
10/16
Kentucky Warbler
*
8/4
8/15
9/2
9/24
10/9
Yellow-crowned Night-Heron
*
-
-
Before July 1
9/24
10/21
Willow Flycatcher
*
8/5
8/19
9/5
9/25
10/9
Yellow-breasted Chat
**
8/13
8/23
9/7
9/25
10/9
Canada Warbler
**
8/13
8/24
9/9
9/26
10/9
Cave Swallow
*
-
-
9/1
9/26
11/26
Mourning Warbler
**
8/15
8/27
9/12
9/28
10/10
Yellow Warbler
***
7/29
8/16
9/7
9/29
10/15
Baltimore Oriole
***
8/18
8/30
9/14
9/30
10/10
Blue-gray Gnatcatcher
***
8/4
8/25
9/13
10/1
10/14
Least Flycatcher
***
8/15
8/30
9/14
10/1
10/13
Warbling Vireo
*
8/23
9/3
9/17
10/3
10/14
Yellow-bellied Flycatcher
*
8/15
8/31
9/15
10/3
10/15
Yellow-throated Vireo
***
8/16
8/30
9/15
10/3
10/17
Blue-winged Warbler
**
8/19
9/1
9/17
10/4
10/16
Summer Tanager
***
8/19
8/31
9/15
10/4
10/19
Wilson's Warbler
***
8/23
9/4
9/19
10/4
10/14
Worm-eating Warbler
**
8/9
8/29
9/15
10/4
10/17
Acadian Flycatcher
***
8/20
9/1
9/16
10/5
10/18
Ruby-throated Hummingbird
***
7/26
8/30
9/13
10/5
10/20
Swainson's Warbler
*
8/14
8/25
9/13
10/5
10/24
Veery
***
8/28
9/7
9/21
10/5
10/16
Chuck-will's-widow
*
8/15
8/31
9/17
10/6
10/20
Red-headed Woodpecker
**
8/24
9/4
9/18
10/6
11/11
Golden-winged Warbler
*
8/27
9/7
9/22
10/7
10/19
Northern Waterthrush
***
8/19
9/3
9/19
10/7
10/21
Red-eyed Vireo
***
8/22
9/5
9/19
10/8
10/23
Blackburnian Warbler
**
8/24
9/6
9/22
10/9
10/23
Bobolink
*
8/21
9/4
9/21
10/9
10/23
Great Plains
Mostly unfavorable conditions keep migrants grounded for much of the weekend and early work week. Some pockets of more favorable winds and clear skies, notably in the central and southern Plains, may allow isolated moderate and heavy flights. A change comes on Wednesday and Thursday, as a frontal boundary pushes across the region. In its wake, moderate to very heavy movements will follow to end the period as favorable conditions build from the Canadian border to Oklahoma. Note that concentrations may occur where birds interact with precipitation associated with the frontal passage, and situations where low visibility and migration overlap will produce movements with high instances of nocturnal flight calling.
Harris’ Sparrow, © Ian Davies
Species on the Move
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Ring-billed Gull
***
7/16
10/23
11/10
11/29
-
Wilson's Snipe
*
8/7
10/3
10/18
11/4
11/16
Pine Siskin
*
8/23
10/11
12/28
-
-
Purple Finch
*
8/31
12/9
After Dec 31
-
-
Western Grebe
*
9/2
10/18
10/31
11/19
12/3
Yellow-bellied Sapsucker
*
9/7
12/7
After Dec 31
-
-
American Coot
***
9/11
10/3
10/29
11/21
12/10
Winter Wren
*
9/16
10/11
11/3
-
-
American Pipit
***
9/17
10/4
10/24
11/12
11/26
Harris's Sparrow
***
9/18
10/6
11/2
-
-
Song Sparrow
***
9/21
10/6
10/25
11/9
11/19
Northern Harrier
***
9/24
10/11
10/29
11/12
11/21
Dark-eyed Junco
****!
9/26
10/13
12/29
-
-
Surf Scoter
*
9/26
10/10
10/28
11/15
11/30
Brown Creeper
***
9/27
10/14
12/20
-
-
Golden-crowned Kinglet
***
9/27
10/12
12/15
After Dec 31
-
Thayer's Gull
*
9/28
10/14
12/11
-
-
Tundra Swan
**
9/28
10/15
10/30
11/18
11/30
Herring Gull
***
9/30
10/22
11/28
After Dec 31
-
Fox Sparrow
***
10/2
10/14
10/30
11/12
11/24
Smith's Longspur
*
10/4
10/27
12/6
-
-
American Wigeon
***
10/5
10/18
11/4
11/20
12/3
Sandhill Crane
***
10/5
10/16
10/30
11/15
11/25
Greater White-fronted Goose
***
10/6
10/18
11/3
11/15
-
Rusty Blackbird
*
10/6
10/22
11/13
-
-
Green-winged Teal
***
10/7
10/19
11/4
11/19
12/2
Horned Grebe
***
10/7
10/20
11/6
11/24
12/9
Gadwall
****!
10/8
10/20
11/7
11/20
12/1
Northern Pintail
***
10/8
10/20
11/4
11/19
12/1
Northern Shrike
**
10/8
10/19
12/17
-
-
Ring-necked Duck
***
10/8
10/20
11/7
11/19
11/29
Rough-legged Hawk
**
10/8
10/28
After Dec 31
-
-
Ruddy Duck
***
10/8
10/20
11/4
11/20
12/4
Lapland Longspur
**
10/9
10/21
12/21
-
-
Peaking Arrivals
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Greater Yellowlegs
*
-
8/1
10/26
11/13
11/25
Merlin
*
8/16
9/6
10/26
-
-
American White Pelican
**
8/22
9/9
10/16
11/18
12/9
Pied-billed Grebe
***
8/30
9/12
10/31
11/20
12/6
Northern Flicker
***
8/30
9/13
10/7
10/26
11/5
Canada Goose
**
-
9/16
11/25
-
-
Franklin's Gull
***
9/1
9/16
10/13
11/10
11/25
Orange-crowned Warbler
***
9/3
9/17
10/3
10/21
11/2
Ruby-crowned Kinglet
***
9/6
9/21
10/10
10/27
11/10
Western Meadowlark
***
9/11
9/21
10/8
11/3
11/19
Marsh Wren
**
9/9
9/22
10/9
10/26
11/9
Red-winged Blackbird
***
9/9
9/22
10/24
11/13
11/27
Spotted Towhee
**
9/10
9/22
10/8
10/28
11/10
Common Grackle
***
9/12
9/23
10/8
10/31
11/16
Lincoln's Sparrow
***
9/8
9/23
10/10
10/28
11/10
Vesper Sparrow
***
9/9
9/23
10/8
10/26
11/8
Double-crested Cormorant
***
9/8
9/25
10/22
11/24
12/17
Sharp-shinned Hawk
***
8/31
9/25
10/10
-
-
Yellow-rumped Warbler
****!
9/12
9/25
10/13
10/29
11/10
Sedge Wren
**
9/16
9/26
10/10
10/26
11/6
Nelson's Sparrow
*
9/17
9/27
10/10
10/25
11/4
Savannah Sparrow
***
9/14
9/27
10/13
10/30
11/12
Sprague's Pipit
*
9/15
9/27
10/11
10/28
11/8
Hermit Thrush
*
9/15
9/28
10/15
10/30
-
Red-tailed Hawk
***
9/8
9/28
10/29
11/14
11/25
White-throated Sparrow
***
9/13
9/28
10/18
11/3
11/16
Field Sparrow
***
9/18
9/30
10/18
11/6
11/17
Swamp Sparrow
***
9/18
9/30
10/17
11/2
11/13
White-crowned Sparrow
***
9/16
9/30
10/18
11/3
11/15
Eastern Meadowlark
***
9/17
10/1
10/19
11/5
11/17
Le Conte's Sparrow
***
9/21
10/1
10/17
11/1
11/12
American Coot
***
9/11
10/3
10/29
11/21
12/10
Wilson's Snipe
**
8/7
10/3
10/18
11/4
11/16
American Pipit
***
9/17
10/4
10/24
11/12
11/26
Harris's Sparrow
***
9/18
10/6
11/2
-
-
Song Sparrow
***
9/21
10/6
10/25
11/9
11/19
Beginning Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Killdeer
***
Before July 1
7/4
8/2
11/3
11/28
Chimney Swift
***
-
7/25
8/10
10/10
10/25
Snowy Egret
**
Before July 1
7/5
8/18
10/2
10/24
Wood Duck
**
Before July 1
7/1
8/19
10/27
11/19
Chipping Sparrow
***
-
-
9/1
10/31
11/14
Common Tern
*
-
-
9/1
10/7
11/1
Mourning Dove
***
-
-
9/1
10/6
10/26
Swainson's Hawk
***
7/28
8/21
9/7
10/4
10/21
House Wren
***
8/25
9/1
9/10
10/3
10/19
Sanderling
*
7/1
7/28
9/10
10/3
10/21
Great Egret
***
-
7/15
9/11
10/16
11/10
Blue-headed Vireo
**
8/19
9/1
9/18
10/5
10/18
Blue-winged Teal
***
8/2
8/18
9/18
10/25
11/13
Summer Tanager
***
8/28
9/6
9/18
10/5
10/17
Black-throated Green Warbler
*
8/17
9/1
9/19
10/7
10/22
Peregrine Falcon
*
Before July 1
7/26
9/19
10/10
10/28
Broad-winged Hawk
*
8/28
9/7
9/20
10/7
10/19
Turkey Vulture
***
8/20
9/8
9/22
10/16
10/30
Eastern Phoebe
***
8/27
9/9
9/23
10/14
10/29
Nashville Warbler
***
8/24
9/6
9/23
10/10
10/24
Clay-colored Sparrow
***
8/20
9/3
9/24
10/16
10/31
Osprey
***
8/25
9/7
9/24
10/11
11/12
Common Yellowthroat
***
9/1
9/15
9/25
10/9
10/14
Cooper's Hawk
**
8/8
9/2
9/25
10/20
11/10
American Golden-Plover
*
8/6
9/3
9/27
10/23
11/19
Palm Warbler
*
8/31
9/11
9/27
10/13
10/25
Scissor-tailed Flycatcher
***
9/6
9/16
9/28
10/19
11/2
Black-bellied Plover
*
7/20
7/30
9/29
11/15
11/28
Sora
*
8/18
9/6
9/29
10/22
11/5
Red-shouldered Hawk
*
8/11
9/5
9/30
10/26
-
Indigo Bunting
***
9/1
9/15
10/1
10/10
10/21
Orange-crowned Warbler
***
9/3
9/17
10/3
10/21
11/2
Northern Flicker
***
8/30
9/13
10/7
10/26
11/5
Common Grackle
***
9/12
9/23
10/8
10/31
11/16
Spotted Towhee
**
9/10
9/22
10/8
10/28
11/10
Vesper Sparrow
***
9/9
9/23
10/8
10/26
11/8
Western Meadowlark
***
9/11
9/21
10/8
11/3
11/19
Marsh Wren
**
9/9
9/22
10/9
10/26
11/9
Ending Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Northern Rough-winged Swallow
**
-
-
Before July 1
7/15
10/19
Yellow-billed Cuckoo
***
-
-
Before July 1
8/22
10/4
Pectoral Sandpiper
**
Before July 1
7/20
8/10
8/26
10/20
Yellow-crowned Night-Heron
*
-
Before July 1
7/31
8/26
10/5
Short-billed Dowitcher
*
Before July 1
7/6
8/7
9/2
10/4
Tree Swallow
**
-
-
Before July 1
9/4
11/8
Marbled Godwit
*
-
-
Before July 1
9/8
10/2
Willet
*
-
-
Before July 1
9/8
10/5
Baird's Sandpiper
**
]+D11
7/10
8/13
9/11
10/3
Snowy Plover
*
-
-
Before July 1
9/12
10/3
Black Tern
***
Before July 1
7/5
8/17
9/14
10/2
Semipalmated Sandpiper
***
7/1
7/15
8/15
9/14
10/3
Forster's Tern
**
Before July 1
7/26
8/20
9/15
10/26
Wilson's Phalarope
***
-
Before July 1
8/21
9/15
10/2
Little Blue Heron
**
-
7/10
8/24
9/16
10/2
Black-necked Stilt
*
-
-
8/7
9/17
10/4
Semipalmated Plover
**
7/1
7/21
8/19
9/17
10/11
Green Heron
***
Before July 1
7/2
8/11
9/18
10/10
Lesser Yellowlegs
**
-
Before July 1
8/21
9/18
11/15
Eastern Wood-Pewee
***
Before July 1
8/5
8/22
9/19
10/6
Red-eyed Vireo
***
8/11
8/19
8/31
9/19
10/2
American Redstart
***
8/10
8/20
9/3
9/20
10/2
Black-and-white Warbler
***
8/10
8/20
9/4
9/20
10/3
Chestnut-sided Warbler
**
8/11
8/21
9/5
9/20
10/2
Least Flycatcher
***
8/8
8/19
9/3
9/20
10/3
Ovenbird
**
8/10
8/20
9/4
9/20
10/2
Yellow-throated Vireo
**
8/11
8/20
9/2
9/20
10/2
Blue-gray Gnatcatcher
***
8/2
8/15
8/27
9/21
10/5
Ruby-throated Hummingbird
***
Before July 1
7/29
8/28
9/21
10/8
Warbling Vireo
***
8/10
9/6
9/12
9/21
10/3
Common Nighthawk
***
-
-
8/28
9/22
10/8
Red-headed Woodpecker
***
7/31
8/13
8/27
9/23
10/13
Yellow-breasted Chat
*
8/20
8/26
9/4
9/24
10/8
Magnolia Warbler
*
8/13
8/24
9/9
9/25
10/7
Rose-breasted Grosbeak
**
8/12
8/22
9/4
9/25
10/10
Black-crowned Night-Heron
*
-
-
9/5
9/26
10/12
Blackpoll Warbler
*
8/15
8/27
9/11
9/27
10/8
Say's Phoebe
**
8/12
8/25
9/7
9/28
10/11
Western Tanager
*
8/19
8/29
9/11
9/28
10/9
Northern Parula
**
8/17
8/27
9/11
9/29
10/11
Philadelphia Vireo
**
8/15
8/27
9/12
9/29
10/10
Swainson's Thrush
***
8/18
8/30
9/13
9/29
10/10
White-eyed Vireo
**
8/19
8/28
9/10
9/29
10/11
Brown Thrasher
***
8/19
8/30
9/11
9/30
10/12
Caspian Tern
*
7/1
8/15
9/11
9/30
10/13
Cattle Egret
*
-
-
8/5
9/30
11/3
Red-necked Phalarope
*
7/1
8/25
9/9
9/30
10/14
Tennessee Warbler
**
8/7
8/22
9/10
9/30
10/16
Yellow-headed Blackbird
***
8/15
9/5
9/15
9/30
10/12
Gray Catbird
***
8/18
8/30
9/11
10/1
10/14
White-faced Ibis
*
Before July 1
8/14
9/4
10/1
10/27
Snowy Egret
**
Before July 1
7/5
8/18
10/2
10/24
House Wren
***
8/25
9/1
9/10
10/3
10/19
Sanderling
*
7/1
7/28
9/10
10/3
10/21
Swainson's Hawk
***
7/28
8/21
9/7
10/4
10/21
Blue-headed Vireo
***
8/19
9/1
9/18
10/5
10/18
Summer Tanager
***
8/28
9/6
9/18
10/5
10/17
Mourning Dove
***
-
-
9/1
10/6
10/26
Black-throated Green Warbler
*
8/17
9/1
9/19
10/7
10/22
Broad-winged Hawk
**
8/28
9/7
9/20
10/7
10/19
Common Tern
*
-
-
9/1
10/7
11/1
Common Yellowthroat
***
9/1
9/15
9/25
10/9
10/14
West
A period of favorable conditions for light to moderate flights kicks off the weekend in California and the northern portion of the region. By Sunday and Monday, however, these movements will diminish substantially as southerly flow returns with some scattered precipitation. But the favorable conditions return, first in the northern Rockies on Wednesday, then to nearly the entire region by Thursday. The conditions will see a return of light to moderate flights, with some locally heavy flights in more eastern extents of the region.
Gadwall, © Chris Wood
Species on the Move
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Ring-billed Gull
**
Before July 1
11/2
11/22
12/5
-
Pied-billed Grebe
**
7/27
10/18
11/11
11/29
-
Northern Harrier
**
8/12
10/29
11/20
-
-
Red-necked Grebe
*
8/26
10/20
11/6
11/22
-
American Wigeon
***
9/3
10/19
11/20
12/4
12/16
American Coot
***
9/5
10/13
11/17
12/5
-
American Robin
*
9/6
12/2
12/23
-
-
Golden-crowned Kinglet
**
9/14
10/3
10/26
11/11
11/21
Ruby-crowned Kinglet
****!
9/15
10/3
12/16
-
-
Western Grebe
***
9/15
10/14
11/5
11/24
12/9
Chestnut-collared Longspur
*
9/17
10/3
10/25
11/12
11/30
White-throated Sparrow
**
9/17
10/3
10/25
-
-
Cackling Goose
**
9/18
10/5
11/22
12/7
12/19
Harris's Sparrow
*
9/18
10/14
After Dec 31
-
-
Red-throated Pipit
*
9/19
10/2
10/19
11/6
11/19
Ruddy Duck
***
9/19
10/13
11/14
-
-
White-winged Scoter
*
9/20
10/22
11/10
11/26
12/7
Dark-eyed Junco
***
9/21
10/9
12/16
After Dec 31
-
Hermit Thrush
***
9/21
10/5
10/28
11/7
11/15
Horned Grebe
***
9/21
10/18
11/11
11/26
12/6
Dunlin
**
9/22
10/11
11/6
11/24
12/8
Herring Gull
**
9/22
10/24
11/26
12/11
After Dec 31
Ring-necked Duck
***
9/24
10/17
12/7
-
-
Bald Eagle
**
9/28
10/22
After Dec 31
-
-
Eurasian Wigeon
*
9/28
10/24
After Dec 31
-
-
Surf Scoter
**
9/28
10/21
11/12
-
-
Swamp Sparrow
*
9/29
10/14
12/17
-
-
Northern Shrike
*
9/30
10/14
12/13
-
-
Common Merganser
*
10/1
11/1
12/15
-
-
Canada Goose
NA
10/1
11/1
11/25
-
-
Ferruginous Hawk
*
10/2
10/31
After Dec 31
-
-
Glaucous-winged Gull
**
10/3
10/26
11/20
-
-
Redhead
**
10/3
10/21
11/14
12/3
After Dec 31
Mew Gull
**
10/4
10/22
11/17
-
-
Greater Scaup
**
10/5
10/21
After Dec 31
-
-
Thayer's Gull
*
10/5
10/24
After Dec 31
-
-
Gadwall
***
10/6
10/25
11/18
-
-
Clark's Grebe
*
10/7
10/20
11/6
11/23
-
Common Loon
***
10/7
10/21
11/7
11/24
-
Rough-legged Hawk
*
10/7
10/30
After Dec 31
-
-
Lesser Scaup
***
10/9
10/25
11/20
-
-
Peaking Arrivals
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
California Gull
*
Before July 1
7/14
11/9
11/26
12/10
Black-bellied Plover
*
Before July 1
7/23
10/8
-
-
Green-winged Teal
**
8/7
8/20
11/21
-
-
Northern Shoveler
***
8/5
8/20
11/22
-
-
Northern Pintail
**
8/9
8/22
11/19
-
-
Black-and-white Warbler
*
8/10
8/27
10/5
10/31
11/17
Belted Kingfisher
**
8/15
9/5
10/27
11/10
-
Black Phoebe
**
8/20
9/6
10/30
-
-
Red-shouldered Hawk
**
8/19
9/6
10/3
10/23
-
Sharp-shinned Hawk
*
8/23
9/9
10/22
11/8
-
Red-winged Blackbird
**
8/24
9/11
10/10
10/31
11/21
Red-tailed Hawk
***
8/18
9/12
After Dec 31
-
-
Lincoln's Sparrow
***
8/30
9/13
10/5
10/22
11/8
Merlin
*
8/29
9/13
12/22
-
-
American Pipit
**
8/30
9/14
11/7
-
-
Flesh-footed Shearwater
*
8/31
9/16
10/2
10/21
11/4
Prothonotary Warbler
*
8/28
9/18
10/4
10/21
11/1
Yellow-green Vireo
*
9/7
9/19
10/5
10/22
11/2
White-crowned Sparrow
****!
9/4
9/20
10/14
10/26
11/6
Greater White-fronted Goose
**
9/8
9/21
10/8
-
-
Red-naped Sapsucker
*
9/8
9/22
10/9
10/24
11/4
Fox Sparrow
***
9/9
9/24
10/19
-
-
Sandhill Crane
*
9/12
9/24
11/18
12/3
12/12
Sharp-tailed Sandpiper
*
9/12
9/24
10/8
10/24
11/4
Magnolia Warbler
*
9/15
9/26
10/10
10/26
11/6
Yellow-rumped Warbler
****!
9/2
9/26
10/17
10/29
11/8
Marsh Wren
*
8/19
9/27
10/30
11/21
-
Golden-crowned Sparrow
***
9/12
9/27
10/21
10/30
11/7
Northern Flicker
***
9/6
9/27
10/20
11/5
11/20
Palm Warbler
*
9/13
9/27
10/18
11/5
11/29
Western Meadowlark
**
9/10
9/27
10/22
11/8
12/6
Black-throated Blue Warbler
*
9/18
9/28
10/12
10/26
11/6
Varied Thrush
**
9/14
9/29
After Dec 31
-
-
Eared Grebe
***
8/30
9/29
11/9
11/29
12/11
Red-throated Pipit
*
9/19
10/2
10/19
11/6
11/19
Chestnut-collared Longspur
*
9/17
10/3
10/25
11/12
11/30
Golden-crowned Kinglet
**
9/14
10/3
10/26
11/11
11/21
Ruby-crowned Kinglet
***
9/15
10/3
12/16
-
-
White-throated Sparrow
**
9/17
10/3
10/25
-
-
Cackling Goose
**
9/18
10/5
11/22
12/7
12/19
Hermit Thrush
***
9/21
10/5
10/28
11/7
11/15
Dark-eyed Junco
***
9/21
10/9
12/16
After Dec 31
-
Beginning Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Summer Tanager
*
-
-
7/27
10/3
10/15
Whimbrel
*
Before July 1
7/10
8/5
10/3
-
Fork-tailed Storm-Petrel
*
7/16
7/30
8/23
10/7
10/23
Red-breasted Nuthatch
*
7/29
8/10
9/2
10/28
11/14
Franklin's Gull
*
Before July 1
7/1
9/3
10/3
11/1
Black Storm-Petrel
*
Before July 1
8/21
9/6
10/21
11/1
Chipping Sparrow
**
8/7
8/20
9/8
10/11
11/5
Yellow Warbler
***
8/5
8/19
9/8
10/3
10/21
Ashy Storm-Petrel
*
Before July 1
8/18
9/11
10/8
10/26
Black-footed Albatross
*
Before July 1
7/21
9/12
10/11
11/5
Pacific-slope Flycatcher
***
8/19
8/28
9/12
10/4
10/20
Sooty Shearwater
*
Before July 1
8/28
9/12
10/2
10/16
Black Turnstone
*
7/3
7/19
9/14
11/26
12/7
Turkey Vulture
***
8/23
9/3
9/14
10/6
10/19
Elegant Tern
*
Before July 1
7/21
9/15
10/5
11/26
Pink-footed Shearwater
*
Before July 1
8/15
9/15
10/19
11/12
Vesper Sparrow
**
8/17
8/30
9/15
10/3
10/17
Heermann's Gull
*
-
Before July 1
9/16
10/7
12/1
Common Tern
*
8/19
9/1
9/16
10/3
10/16
Common Yellowthroat
***
8/17
8/29
9/16
10/9
10/28
Vaux's Swift
**
8/26
9/5
9/16
10/7
10/21
Clay-colored Sparrow
*
8/14
8/28
9/17
10/6
11/2
Prairie Warbler
*
8/21
9/3
9/19
10/5
10/17
Parasitic Jaeger
*
8/21
9/4
9/20
10/8
10/22
Pectoral Sandpiper
**
8/17
9/1
9/20
10/11
10/28
Buller's Shearwater
*
7/28
8/21
9/21
10/22
11/15
Sabine's Gull
*
8/15
9/4
9/21
10/6
10/17
Tennessee Warbler
*
8/22
9/4
9/21
10/8
10/22
Bobolink
*
8/25
9/6
9/22
10/8
10/21
Mountain Bluebird
*
9/6
9/12
9/22
10/15
10/29
Orange-crowned Warbler
***
8/12
9/2
9/22
10/12
10/29
Blackpoll Warbler
*
8/28
9/8
9/24
10/9
10/22
Chestnut-sided Warbler
*
8/26
9/7
9/24
10/9
10/24
Pomarine Jaeger
*
7/20
8/30
9/25
10/22
11/14
South Polar Skua
*
7/26
9/10
9/25
10/15
10/30
Broad-winged Hawk
*
9/2
9/12
9/27
10/13
10/24
Savannah Sparrow
**
8/13
8/29
9/27
10/21
11/9
Blackburnian Warbler
*
8/25
9/8
9/28
10/17
11/7
Blue-winged Teal
*
8/6
8/21
9/28
10/24
11/8
Brewer's Blackbird
**
8/23
9/8
9/28
10/16
11/10
Black-throated Gray Warbler
**
7/30
8/13
9/30
10/22
11/4
Townsend's Warbler
**
8/12
8/30
9/30
10/27
11/10
Cooper's Hawk
*
8/1
9/7
10/1
11/2
11/19
Flesh-footed Shearwater
*
8/31
9/16
10/2
10/21
11/4
Red-shouldered Hawk
*
8/19
9/6
10/3
10/23
-
Prothonotary Warbler
*
8/28
9/18
10/4
10/21
11/1
Black-and-white Warbler
*
8/10
8/27
10/5
10/31
11/17
Lincoln's Sparrow
**
8/30
9/13
10/5
10/22
11/8
Yellow-green Vireo
*
9/7
9/19
10/5
10/22
11/2
Sharp-tailed Sandpiper
*
9/12
9/24
10/8
10/24
11/4
Red-naped Sapsucker
*
9/8
9/22
10/9
10/24
11/4
Ending Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Violet-green Swallow
**
-
-
Before July 1
7/26
10/15
Lucy's Warbler
*
-
-
Before July 1
7/27
10/16
Indigo Bunting
*
-
Before July 1
7/21
8/11
10/2
Hermit Warbler
*
7/28
8/6
8/22
9/7
10/26
Ruddy Turnstone
*
Before July 1
7/13
8/21
9/8
12/5
Snowy Plover
*
Before July 1
7/4
8/10
9/9
10/4
Wilson's Phalarope
**
Before July 1
7/13
8/11
9/11
10/3
Black-chinned Hummingbird
***
Before July 1
7/16
8/9
9/13
10/4
Greater Yellowlegs
*
Before July 1
7/10
8/30
9/14
12/11
Lesser Yellowlegs
*
Before July 1
8/9
8/26
9/14
10/20
Western Sandpiper
***
Before July 1
7/8
8/29
9/15
10/6
Blue Grosbeak
**
Before July 1
7/1
7/31
9/16
10/12
Osprey
**
8/4
8/14
8/26
9/16
10/18
Lazuli Bunting
**
8/5
8/11
8/20
9/17
10/10
Virginia's Warbler
*
8/3
8/14
8/27
9/17
10/2
Black-necked Stilt
**
Before July 1
7/1
8/22
9/18
10/7
Gray Catbird
**
8/10
8/19
8/31
9/19
10/2
Lark Sparrow
**
7/21
8/1
8/19
9/19
10/5
Northern Waterthrush
*
8/9
8/20
9/4
9/19
10/3
Olive-sided Flycatcher
**
-
-
Before July 1
9/19
10/3
Red-necked Phalarope
***
8/2
8/16
9/1
9/19
10/5
Spotted Sandpiper
***
Before July 1
7/3
8/21
9/19
10/4
Brown Thrasher
*
8/12
8/21
9/5
9/21
10/6
Mourning Dove
***
-
Before July 1
8/17
9/22
10/8
Plumbeous Vireo
*
-
-
7/15
9/22
10/6
Green Heron
*
-
Before July 1
8/30
9/23
10/18
MacGillivray's Warbler
***
8/8
8/19
9/4
9/23
10/7
Nashville Warbler
**
8/2
8/16
9/4
9/23
10/12
Willow Flycatcher
***
8/9
8/20
9/3
9/23
10/7
Zone-tailed Hawk
*
Before July 1
7/17
8/9
9/23
10/11
Black Tern
*
Before July 1
7/24
8/15
9/24
10/8
Hammond's Flycatcher
*
8/13
8/22
9/6
9/24
10/7
Least Flycatcher
*
8/11
8/21
9/6
9/24
10/8
Sage Thrasher
*
-
-
8/29
9/24
10/20
Swainson's Thrush
**
8/19
8/26
9/8
9/24
10/10
Tufted Puffin
*
-
-
8/31
9/24
10/11
Wandering Tattler
*
Before July 1
7/20
8/24
9/24
10/16
Yellow-headed Blackbird
**
8/12
8/21
9/2
9/24
10/11
Barn Swallow
***
-
Before July 1
8/23
9/25
10/12
Cassin's Vireo
**
8/11
8/22
9/6
9/25
10/8
Gray Flycatcher
*
8/9
8/22
9/5
9/25
10/7
White-faced Ibis
**
Before July 1
7/4
8/26
9/25
10/16
American White Pelican
*
Before July 1
8/17
9/1
9/26
12/11
Bell's Vireo
*
-
Before July 1
7/28
9/26
10/12
Western Wood-Pewee
***
-
-
8/7
9/26
10/12
American Redstart
*
8/11
8/23
9/10
9/27
10/11
Ruff
*
7/27
8/26
9/10
9/27
10/9
Swainson's Hawk
**
-
7/26
8/14
9/27
10/13
American Avocet
*
-
Before July 1
8/31
9/28
10/20
Cinnamon Teal
*
7/31
8/16
9/5
9/28
10/14
Red-throated Loon
*
8/25
9/5
9/20
9/28
10/2
Brewer's Sparrow
**
8/6
8/21
9/8
9/28
10/11
Western Tanager
***
8/15
8/25
9/7
9/28
10/12
Wilson's Warbler
***
8/8
8/22
9/8
9/28
10/12
House Wren
**
8/14
8/24
9/9
9/29
11/8
Warbling Vireo
***
8/14
8/25
9/9
9/29
10/13
Arctic Tern
*
7/18
8/8
9/5
9/30
10/17
Blue-gray Gnatcatcher
*
8/9
8/24
9/12
9/30
10/13
Killdeer
**
8/4
8/19
9/8
9/30
11/20
Green-tailed Towhee
**
8/21
9/1
9/14
10/1
10/12
Long-tailed Jaeger
*
7/19
8/29
9/12
10/1
10/13
Sooty Shearwater
*
Before July 1
8/28
9/12
10/2
10/16
Common Tern
*
8/19
9/1
9/16
10/3
10/16
Franklin's Gull
*
Before July 1
7/1
9/3
10/3
11/1
Summer Tanager
*
-
-
7/27
10/3
10/15
Vesper Sparrow
**
8/17
8/30
9/15
10/3
10/17
Yellow Warbler
***
8/5
8/19
9/8
10/3
10/21
Pacific-slope Flycatcher
***
8/19
8/28
9/12
10/4
10/20
Elegant Tern
*
Before July 1
7/21
9/15
10/5
11/26
Prairie Warbler
*
8/21
9/3
9/19
10/5
10/17
Clay-colored Sparrow
*
8/14
8/28
9/17
10/6
11/2
Sabine's Gull
**
8/15
9/4
9/21
10/6
10/17
Turkey Vulture
***
8/23
9/3
9/14
10/6
10/19
Heermann's Gull
*
-
Before July 1
9/16
10/7
12/1
Fork-tailed Storm-Petrel
*
7/16
7/30
8/23
10/7
10/23
Vaux's Swift
***
8/26
9/5
9/16
10/7
10/21
Ashy Storm-Petrel
*
Before July 1
8/18
9/11
10/8
10/26
Bobolink
*
8/25
9/6
9/22
10/8
10/21
Parasitic Jaeger
*
8/21
9/4
9/20
10/8
10/22
Tennessee Warbler
*
8/22
9/4
9/21
10/8
10/22
Blackpoll Warbler
*
8/28
9/8
9/24
10/9
10/22
Chestnut-sided Warbler
*
8/26
9/7
9/24
10/9
10/24
Common Yellowthroat
***
8/17
8/29
9/16
10/9
10/28
–––––––––––––––––––––––––––––––––––
Farnsworth and Van Doren
