Regional Migration Forecast: 14-21 October 2016

Eastern Phoebe. Peter Brannon/Macaulay Library. eBird S32026426.

Eastern Phoebe. Peter Brannon/Macaulay Library. eBird S32026426.

Continental Summary

Favorable migration conditions do not arrive in the West until mid period, bringing light to moderate flights of Redhead, Ruddy Duck, Red-tailed Hawk, Northern Flicker, Hermit Thrush, Yellow-rumped Warbler, Western Meadowlark, Fox Sparrow, Golden-crowned Sparrow, and Dark-eyed Junco, while a warming trend in the East yields to more typical fall conditions featuring moderate to heavy movements of Pied-billed Grebe, Franklin’s Gull, Northern Flicker, American Kestrel, Eastern Bluebird, Ruby-crowned Kinglet, Red-winged Blackbird, White-throated Sparrow, and Dark-eyed Junco.

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!

Additionally, 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.

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 warming trend follows the passage of a strong cold front departing off the Atlantic Coast, dominating the region’s weather for the first half of the period. Light to locally heavy coastal flights on Friday night will highlight the weekend’s migration scene, as southerly winds hold sway in most other areas. A small disturbance moving through the Great Lakes will bring some marginal and locally favorable conditions to the northern reaches of New York and New England to end the weekend and beginning of the work week, with light to locally heavy flights following suite. However, not until Tuesday night does a larger cool air mass arrive, bringing moderate to locally very heavy flights to the Upper Midwest. These spread east by Wednesday night, though mostly in the northern half of the region. The period ends with a complex mix of precipitation, favorable winds, and exciting opportunities worth pondering and revisiting as the period unfolds as low pressure moves through the mid-Atlantic. Depending on the interaction of precipitation and migration, fallouts and local concentrations may occur in a widespread zone from the Appalachians east and north through New England. Those interested in flight calling and visible nocturnal migration should pay particularly close attention to illuminated locations during this time, as areas of migration activity, precipitation and low cloud ceiling overlap. Those with abilities to extinguish lights in these locations and during these conditions should consider doing so.

Brown Creeper. Cynthia Crawford/Macaulay Library. eBird S32012840.

Brown Creeper. Cynthia Crawford/Macaulay Library. eBird S32012840.

Species on the Move

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Great Cormorant * 9/5 11/16 After Nov 30 - -
Dunlin ** 9/13 10/17 10/29 11/11 11/22
American Black Duck *** 9/23 10/14 After Nov 30 - -
Surf Scoter ** 9/25 10/19 11/4 11/12 11/17
Redhead * 9/28 10/19 11/14 11/18 11/20
Dark-eyed Junco ****! 9/28 10/14 11/10 11/16 11/22
Fox Sparrow *** 9/28 10/16 11/9 After Nov 30 -
Ruddy Duck *** 9/29 10/17 11/8 11/23 After Nov 30
Gadwall *** 10/4 10/19 11/12 11/22 After Nov 30
Ring-necked Duck *** 10/7 10/23 11/9 11/17 11/24
Greater Scaup * 10/9 10/22 After Nov 30 - -
Red-necked Grebe * 10/11 10/23 11/5 11/15 11/23
Red-throated Loon ** 10/11 10/28 After Nov 30 - -
Canvasback * 10/12 10/23 After Nov 30 - -
Lesser Scaup *** 10/12 10/25 11/14 11/20 After Nov 30
Bonaparte's Gull *** 10/12 10/25 11/11 After Nov 30 -
White-winged Scoter ** 10/12 10/24 11/6 11/13 11/18
Common Loon *** 10/14 10/26 11/11 11/24 After Nov 30
Horned Grebe *** 10/15 10/26 11/11 11/17 11/22
Common Merganser ** 10/16 11/29 After Nov 30 - -
Red-breasted Merganser *** 10/16 11/1 After Nov 30 - -
Long-tailed Duck *** 10/18 10/27 After Nov 30 - -
Bufflehead ****! 10/20 10/30 11/22 After Nov 30 -
Hooded Merganser *** 10/20 11/3 After Nov 30 - -

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Sharp-shinned Hawk *** 8/31 9/10 10/17 10/30 After Nov 30
American Pipit ** 9/10 9/22 10/24 11/11 11/25
Eastern Bluebird *** 9/12 9/27 10/18 11/12 After Nov 30
Winter Wren *** 9/17 9/28 10/15 10/28 11/8
Brown Creeper *** 9/19 9/29 10/14 10/24 11/5
Ruby-crowned Kinglet ****! 9/18 9/30 10/14 10/28 11/8
White-throated Sparrow ****! 9/18 9/30 10/18 10/31 11/12
Golden-crowned Kinglet ****! 9/22 10/1 10/15 11/6 11/18
Song Sparrow *** 9/19 10/1 10/14 10/28 11/10
Eastern Meadowlark ** 9/17 10/2 10/16 10/30 11/11
White-crowned Sparrow *** 9/23 10/2 10/15 10/27 11/6
Wilson's Snipe * 9/24 10/3 10/16 10/29 After Nov 30
Rusty Blackbird ** 9/19 10/3 10/23 11/10 After Nov 30
Red-winged Blackbird *** 9/24 10/4 10/18 11/6 After Nov 30
Hermit Thrush *** 9/25 10/6 10/19 10/31 11/10
American Wigeon ** 9/23 10/8 10/28 11/10 11/29
Field Sparrow *** 9/29 10/8 10/18 10/30 11/8
Common Grackle ** 10/2 10/8 10/18 11/7 After Nov 30
Purple Finch *** 9/26 10/8 10/24 11/8 After Nov 30
Northern Harrier ** 8/2 10/9 10/21 11/2 11/13
Pine Siskin *** 9/27 10/10 10/28 11/11 After Nov 30
Green-winged Teal ** 8/13 10/11 10/24 After Nov 30 -
Pied-billed Grebe *** 9/4 10/11 10/31 11/20 After Nov 30
Northern Shoveler * 8/9 10/12 11/8 After Nov 30 -
Northern Pintail ** 9/5 10/12 10/27 11/7 After Nov 30
Vesper Sparrow * 10/5 10/12 10/21 11/2 11/10
Brant ** 10/1 10/13 10/30 11/8 11/15
American Black Duck ** 9/23 10/14 After Nov 30 - -
Dark-eyed Junco ****! 9/28 10/14 11/10 11/16 11/22
Fox Sparrow *** 9/28 10/16 11/9 After Nov 30 -
Ruddy Duck *** 9/29 10/17 11/8 11/23 After Nov 30
Dunlin ** 9/13 10/17 10/29 11/11 11/22
Gadwall ** 10/4 10/19 11/12 11/22 After Nov 30
Redhead * 9/28 10/19 11/14 11/18 11/20
Surf Scoter * 9/25 10/19 11/4 11/12 11/17

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Killdeer *** - - Before Aug 1 10/25 11/24
Tree Swallow *** - 8/2 8/9 10/25 11/6
Snowy Egret ** - 8/2 8/11 10/17 10/31
Great Egret *** - 8/2 8/13 10/22 11/5
Laughing Gull ** - 8/2 8/14 After Nov 30 -
Great Blue Heron *** - 8/2 8/15 10/20 After Nov 30
Osprey *** - 8/2 8/15 10/19 11/4
Greater Yellowlegs ** - 8/2 8/20 11/11 After Nov 30
Wood Duck ** - 8/2 8/21 11/2 11/22
Royal Tern * - 8/2 8/21 11/8 After Nov 30
Blue-winged Teal ** 8/2 8/19 9/7 10/22 11/5
Turkey Vulture *** 8/28 9/6 9/19 10/27 After Nov 30
Belted Kingfisher *** - 8/2 9/19 10/16 10/29
Merlin * 8/26 9/4 9/20 10/26 11/6
Red-shouldered Hawk * 8/26 9/5 9/21 11/10 11/19
Black-throated Blue Warbler *** 8/23 9/2 9/25 10/14 10/23
American Kestrel ** 8/29 9/6 9/26 10/22 11/2
Blue Jay *** 8/23 9/8 9/28 10/30 11/26
Eastern Phoebe *** 9/9 9/18 9/30 10/18 11/3
Marsh Wren * 9/7 9/19 9/30 10/17 10/29
Red-breasted Nuthatch ** 8/12 9/4 10/2 10/17 After Nov 30
Peregrine Falcon ** 8/2 9/23 10/4 10/17 10/28
Blue-headed Vireo *** 9/8 9/21 10/4 10/19 10/31
Yellow-bellied Sapsucker *** 9/16 9/25 10/5 10/16 10/24
Lincoln's Sparrow *** 9/10 9/22 10/5 10/19 10/31
Palm Warbler *** 9/2 9/21 10/6 10/21 11/1
Eastern Towhee *** 9/23 9/30 10/9 10/23 11/3
Horned Lark * 9/23 9/29 10/10 10/15 10/17
Cooper's Hawk *** 8/2 9/7 10/11 10/28 11/8
Yellow-rumped Warbler *** 9/19 9/29 10/12 10/26 11/7
Chipping Sparrow *** 9/16 10/2 10/12 10/29 11/9
Savannah Sparrow *** 9/12 9/26 10/12 10/29 11/12
American Robin *** 9/13 9/24 10/13 11/8 After Nov 30
Swamp Sparrow *** 9/20 9/30 10/13 10/27 11/10
Brown Creeper ** 9/19 9/29 10/14 10/24 11/5
Ruby-crowned Kinglet *** 9/18 9/30 10/14 10/28 11/8
Song Sparrow *** 9/19 10/1 10/14 10/28 11/10
Winter Wren ** 9/17 9/28 10/15 10/28 11/8
Golden-crowned Kinglet *** 9/22 10/1 10/15 11/6 11/18
White-crowned Sparrow *** 9/23 10/2 10/15 10/27 11/6
Wilson's Snipe * 9/24 10/3 10/16 10/29 After Nov 30
Eastern Meadowlark * 9/17 10/2 10/16 10/30 11/11
Sharp-shinned Hawk *** 8/31 9/10 10/17 10/30 After Nov 30
Eastern Bluebird ** 9/12 9/27 10/18 11/12 After Nov 30
Field Sparrow *** 9/29 10/8 10/18 10/30 11/8
White-throated Sparrow *** 9/18 9/30 10/18 10/31 11/12
Red-winged Blackbird *** 9/24 10/4 10/18 11/6 After Nov 30
Common Grackle *** 10/2 10/8 10/18 11/7 After Nov 30
Hermit Thrush *** 9/25 10/6 10/19 10/31 11/10
Northern Harrier ** 8/2 10/9 10/21 11/2 11/13
Vesper Sparrow ** 10/5 10/12 10/21 11/2 11/10

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Black Skimmer * - - Before Aug 1 8/3 10/28
Little Blue Heron * - 8/2 8/9 8/25 10/24
Black-crowned Night-Heron * - 8/2 8/9 8/25 10/27
Northern Rough-winged Swallow ** - - Before Aug 1 8/25 10/25
Black-bellied Plover * - 8/2 8/18 8/27 After Nov 30
Blue Grosbeak * - - Before Aug 1 8/31 10/17
Pectoral Sandpiper ** 8/11 8/17 8/23 9/7 11/13
Caspian Tern ** - 8/2 8/20 9/12 10/22
Bobolink ** 8/2 8/19 9/2 9/16 10/19
American Golden-Plover * 8/16 8/26 9/9 9/22 10/16
Cedar Waxwing *** - 8/2 8/17 9/25 After Nov 30
Forster's Tern * - 8/2 8/16 9/26 After Nov 30
Swainson's Thrush *** 8/27 9/5 9/17 9/30 10/14
Cape May Warbler *** 8/25 9/4 9/18 10/2 10/15
Brown Thrasher *** 8/30 9/9 9/21 10/4 10/17
Tennessee Warbler *** 8/17 8/29 9/15 10/4 10/19
Northern Parula *** 8/28 9/7 9/20 10/4 10/15
Gray-cheeked Thrush ** 9/2 9/11 9/23 10/5 10/14
Black-throated Green Warbler *** 8/24 9/7 9/21 10/6 10/17
House Wren *** 8/30 9/5 9/15 10/7 10/21
Blackpoll Warbler *** 8/28 9/7 9/22 10/8 10/23
Gray Catbird *** 8/28 9/8 9/18 10/9 10/22
Common Yellowthroat *** 8/24 9/2 9/17 10/9 10/23
Yellow-crowned Night-Heron * - 8/2 8/6 10/10 10/28
Northern Flicker *** 8/30 9/12 9/25 10/10 10/30
Nashville Warbler *** 8/23 9/3 9/20 10/10 10/22
Chimney Swift *** 8/9 8/14 8/18 10/11 10/20
Sora * 8/12 8/21 9/24 10/12 10/25
Pine Warbler *** 8/23 9/4 9/21 10/12 10/26
Indigo Bunting *** 9/10 9/16 9/25 10/12 10/21
Black-throated Blue Warbler *** 8/23 9/2 9/25 10/14 10/23
Horned Lark * 9/23 9/29 10/10 10/15 10/17
Belted Kingfisher *** - 8/2 9/19 10/16 10/29
Yellow-bellied Sapsucker *** 9/16 9/25 10/5 10/16 10/24
Snowy Egret ** - 8/2 8/11 10/17 10/31
Peregrine Falcon *** 8/2 9/23 10/4 10/17 10/28
Red-breasted Nuthatch * 8/12 9/4 10/2 10/17 After Nov 30
Marsh Wren ** 9/7 9/19 9/30 10/17 10/29
Eastern Phoebe *** 9/9 9/18 9/30 10/18 11/3
Osprey *** - 8/2 8/15 10/19 11/4
Blue-headed Vireo *** 9/8 9/21 10/4 10/19 10/31
Lincoln's Sparrow *** 9/10 9/22 10/5 10/19 10/31
Great Blue Heron *** - 8/2 8/15 10/20 After Nov 30
Palm Warbler *** 9/2 9/21 10/6 10/21 11/1

Gulf Coast and Southeast

Conditions are mostly unfavorable for migration for most of the region through the bulk of the forecast period. Other than locally moderate to heavy flights in the coastal southeast and portions of Florida during the first half of the period, southerly flow and warm air make for poor conditions for migration in most other areas. The change arrives on Thursday, as precipitation pushes east ahead of a low pressure center. As the low moves east, favorable conditions for migration will bring moderate to very heavy flights. However, these will be mostly west of the Mississippi River during this period, as the low is not forecast to travel far enough east to spawn widespread flights.

American Kestrel. Katherine Cavazos/Macaulay Library. eBird S32026481.

American Kestrel. Katherine Cavazos/Macaulay Library. eBird S32026481.

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Great Blue Heron *** 8/2 11/5 11/16 After Nov 30 -
American Avocet * 8/2 10/22 11/7 After Nov 30 -
Blue-headed Vireo ** 9/3 10/15 10/31 11/8 11/14
Northern Harrier *** 9/16 10/27 11/16 After Nov 30 -
Herring Gull ** 9/22 11/29 After Nov 30 - -
Pied-billed Grebe *** 9/25 10/31 11/20 After Nov 30 -
Ruby-crowned Kinglet ****! 9/26 10/14 11/16 11/24 After Nov 30
American White Pelican *** 9/29 10/30 11/15 11/21 After Nov 30
Wilson's Snipe *** 9/30 10/15 11/14 After Nov 30 -
Red-tailed Hawk *** 10/1 10/26 11/20 After Nov 30 -
Western Meadowlark * 10/2 10/19 11/12 After Nov 30 -
Eastern Meadowlark *** 10/2 10/15 11/3 11/23 After Nov 30
Spotted Towhee * 10/5 10/16 After Nov 30 - -
Savannah Sparrow *** 10/5 10/20 11/10 11/27 After Nov 30
Brown Creeper ** 10/6 10/18 11/23 After Nov 30 -
Yellow-rumped Warbler ****! 10/6 10/18 After Nov 30 - -
Winter Wren *** 10/7 10/17 After Nov 30 - -
Golden-crowned Kinglet *** 10/7 10/17 11/15 After Nov 30 -
Song Sparrow *** 10/7 10/19 11/17 After Nov 30 -
Sandhill Crane ** 10/8 10/29 After Nov 30 - -
White-throated Sparrow ****! 10/9 10/19 11/18 After Nov 30 -
American Wigeon *** 10/10 10/30 11/18 After Nov 30 -
Dunlin *** 10/10 10/26 11/12 After Nov 30 -
Green-winged Teal *** 10/11 11/4 11/18 After Nov 30 -
Vesper Sparrow *** 10/12 10/23 11/7 11/15 11/22
Chipping Sparrow *** 10/13 10/24 After Nov 30 - -
Franklin's Gull ** 10/14 10/26 11/7 11/25 After Nov 30
Field Sparrow *** 10/14 10/25 11/14 After Nov 30 -
Pine Siskin ** 10/14 10/30 After Nov 30 - -
Hermit Thrush *** 10/15 10/25 11/11 11/17 11/21
Gadwall *** 10/17 10/30 11/19 After Nov 30 -
Orange-crowned Warbler *** 10/17 10/28 11/10 11/18 11/24
Northern Pintail *** 10/18 10/31 11/18 After Nov 30 -
Ruddy Duck *** 10/18 11/1 11/19 After Nov 30 -
Common Gallinule *** 10/18 10/28 11/11 11/19 After Nov 30
Common Gallinule *** 10/18 10/28 11/11 11/19 After Nov 30
Dark-eyed Junco *** 10/18 11/2 After Nov 30 - -
Northern Gannet * 10/19 11/4 After Nov 30 - -
Ring-necked Duck *** 10/20 11/5 11/23 After Nov 30 -
Redhead *** 10/21 11/3 11/19 After Nov 30 -
Eared Grebe * 10/21 11/4 11/24 After Nov 30 -
Black-necked Stilt ** 10/21 10/29 11/9 After Nov 30 -

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Black-bellied Plover * - 8/2 10/31 After Nov 30 -
Caspian Tern * - 8/2 11/7 After Nov 30 -
Blue-winged Teal * 8/8 8/26 11/8 11/29 After Nov 30
Bald Eagle ** 9/3 9/15 11/21 After Nov 30 -
Belted Kingfisher *** 8/13 9/18 10/22 After Nov 30 -
Cooper's Hawk ** 8/2 9/21 10/17 After Nov 30 -
Sora * 8/29 9/21 11/7 11/17 After Nov 30
Sharp-shinned Hawk ** 9/8 9/24 10/28 11/15 After Nov 30
Brown-headed Cowbird ** 9/15 9/27 10/23 After Nov 30 -
American Kestrel *** 9/12 9/29 11/12 After Nov 30 -
Black Vulture ** 8/28 9/30 11/18 After Nov 30 -
Northern Flicker *** 9/18 10/1 10/17 10/29 11/8
Tree Swallow ** 9/24 10/3 11/2 11/14 11/22
Marsh Wren ** 9/20 10/3 11/1 11/18 After Nov 30
Lincoln's Sparrow ** 9/23 10/4 10/31 11/13 11/21
Painted Bunting * 9/28 10/4 10/14 10/29 11/9
Red-winged Blackbird *** 9/22 10/4 11/9 After Nov 30 -
Palm Warbler *** 9/15 10/5 10/20 10/31 11/7
House Wren *** 9/23 10/6 10/28 11/12 After Nov 30
American Bittern * 9/14 10/9 11/12 After Nov 30 -
Eastern Phoebe *** 9/25 10/9 10/30 After Nov 30 -
Common Grackle *** 9/29 10/9 10/21 After Nov 30 -
Yellow-bellied Sapsucker *** 9/30 10/9 10/24 10/31 11/6
Eastern Towhee ** 9/10 10/10 10/19 11/1 11/12
Double-crested Cormorant *** 9/27 10/11 11/22 After Nov 30 -
Red-breasted Nuthatch * 10/2 10/11 10/23 After Nov 30 -
Sedge Wren * 9/28 10/11 11/2 After Nov 30 -
Ruby-crowned Kinglet *** 9/26 10/14 11/16 11/24 After Nov 30
Wilson's Snipe ** 9/30 10/15 11/14 After Nov 30 -
Blue-headed Vireo ** 9/3 10/15 10/31 11/8 11/14
Eastern Meadowlark *** 10/2 10/15 11/3 11/23 After Nov 30
Spotted Towhee * 10/5 10/16 After Nov 30 - -
Winter Wren * 10/7 10/17 After Nov 30 - -
Golden-crowned Kinglet *** 10/7 10/17 11/15 After Nov 30 -
Brown Creeper * 10/6 10/18 11/23 After Nov 30 -
Yellow-rumped Warbler *** 10/6 10/18 After Nov 30 - -
Song Sparrow *** 10/7 10/19 11/17 After Nov 30 -
White-throated Sparrow *** 10/9 10/19 11/18 After Nov 30 -
Western Meadowlark * 10/2 10/19 11/12 After Nov 30 -
Savannah Sparrow *** 10/5 10/20 11/10 11/27 After Nov 30

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Piping Plover * - 8/2 8/20 After Nov 30 -
Eastern Wood-Pewee *** 8/19 9/1 9/17 10/17 11/2
Red-headed Woodpecker ** 8/22 9/4 9/18 10/26 11/5
Northern Parula *** 8/11 9/2 9/19 10/24 11/4
Black-and-white Warbler *** 8/22 9/5 9/22 10/25 11/5
Prairie Warbler *** 8/2 9/7 9/22 10/14 11/3
Ovenbird *** 8/26 9/11 9/25 10/25 11/5
Yellow-throated Warbler ** 8/2 9/3 9/25 10/20 11/4
Cape May Warbler * 9/3 9/12 9/25 10/28 11/5
American Redstart *** 8/31 9/12 9/26 10/19 11/2
Scarlet Tanager *** 8/30 9/12 9/28 10/14 10/25
Magnolia Warbler *** 8/31 9/13 10/1 10/19 10/31
Swainson's Hawk * - 8/2 10/2 10/16 10/28
Wood Thrush ** 9/10 9/21 10/2 10/15 10/25
Tennessee Warbler *** 8/31 9/11 10/3 10/23 11/3
Nashville Warbler ** 8/30 9/11 10/4 10/24 11/12
Clay-colored Sparrow * 9/2 9/16 10/4 10/21 11/6
Rose-breasted Grosbeak *** 9/12 9/21 10/4 10/16 10/26
Brown Thrasher *** 9/2 9/22 10/6 10/21 11/3
Common Yellowthroat *** 9/1 9/17 10/6 10/21 11/2
Peregrine Falcon ** 9/15 9/25 10/7 10/18 10/26
Scissor-tailed Flycatcher *** 9/8 9/23 10/7 11/3 11/23
Merlin * 9/8 9/18 10/9 11/2 11/16
Pine Warbler *** 8/15 9/1 10/9 10/26 11/3
Gray Catbird *** 9/16 9/27 10/10 10/23 11/6
Northern Mockingbird *** 9/7 9/23 10/10 10/26 11/22
Black-throated Green Warbler *** 8/28 9/6 10/10 10/25 11/6
Black-throated Blue Warbler *** 8/31 9/11 10/11 10/27 11/5
Indigo Bunting *** 9/21 9/30 10/11 10/25 11/5
Northern Rough-winged Swallow ** 9/25 10/3 10/13 11/2 11/20
Painted Bunting ** 9/28 10/4 10/14 10/29 11/9
Cooper's Hawk ** 8/2 9/21 10/17 After Nov 30 -
Northern Flicker *** 9/18 10/1 10/17 10/29 11/8
Eastern Towhee *** 9/10 10/10 10/19 11/1 11/12
Palm Warbler *** 9/15 10/5 10/20 10/31 11/7
Common Grackle *** 9/29 10/9 10/21 After Nov 30 -

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Blue Grosbeak ** - - Before Aug 1 8/24 10/28
Sandwich Tern * - 8/2 8/16 8/27 After Nov 30
Barn Swallow *** - 8/2 8/10 9/9 11/14
Cliff Swallow ** - - Before Aug 1 9/14 10/18
Least Sandpiper * - 8/2 8/25 9/15 After Nov 30
Western Sandpiper * 8/2 8/17 8/31 9/15 After Nov 30
Cave Swallow * 8/2 8/28 9/4 9/16 11/21
Dickcissel * 8/21 8/29 9/5 9/20 10/25
Blue-gray Gnatcatcher *** 8/2 8/29 9/12 9/26 10/15
Wilson's Warbler *** 8/27 9/4 9/17 9/29 10/16
Common Tern * - 8/2 8/18 9/30 11/10
Summer Tanager *** 8/21 9/1 9/15 10/1 10/18
Acadian Flycatcher *** 8/21 9/1 9/15 10/2 10/16
Cattle Egret ** - - Before Aug 1 10/3 10/18
Blackburnian Warbler ** 8/26 9/5 9/18 10/3 10/28
Ruby-throated Hummingbird *** 8/13 8/29 9/13 10/4 10/19
Hooded Warbler *** 8/8 8/20 9/20 10/5 10/29
Broad-winged Hawk ** 9/6 9/15 9/25 10/6 10/16
Yellow-crowned Night-Heron * - - Before Aug 1 10/8 10/23
Red-eyed Vireo *** 8/20 9/3 9/17 10/8 10/24
Chestnut-sided Warbler *** 8/23 9/6 9/22 10/9 10/23
Chimney Swift *** 8/23 9/5 9/21 10/11 10/22
White-eyed Vireo *** 8/21 9/2 9/19 10/13 10/28
Swainson's Thrush *** 9/8 9/17 9/29 10/13 10/23
Bobolink * 8/21 9/2 9/20 10/13 10/26
Prairie Warbler *** 8/2 9/7 9/22 10/14 11/3
Scarlet Tanager *** 8/30 9/12 9/28 10/14 10/25
Wood Thrush *** 9/10 9/21 10/2 10/15 10/25
Swainson's Hawk * - 8/2 10/2 10/16 10/28
Rose-breasted Grosbeak *** 9/12 9/21 10/4 10/16 10/26
Eastern Wood-Pewee *** 8/19 9/1 9/17 10/17 11/2
Peregrine Falcon *** 9/15 9/25 10/7 10/18 10/26
American Redstart *** 8/31 9/12 9/26 10/19 11/2
Magnolia Warbler *** 8/31 9/13 10/1 10/19 10/31
Yellow-throated Warbler *** 8/2 9/3 9/25 10/20 11/4
Brown Thrasher *** 9/2 9/22 10/6 10/21 11/3
Common Yellowthroat *** 9/1 9/17 10/6 10/21 11/2
Clay-colored Sparrow * 9/2 9/16 10/4 10/21 11/6

Great Plains

Locally moderate to heavy movements punctuate the region through the weekend and into the beginning of the work week, as generally unfavorable conditions persist in many areas. Widespread movements are likely, though, once these conditions give way to more typical autumn weather on Tuesday, Wednesday, and Thursday; moderate to very heavy flights are likely as these conditions arrive. By Friday morning, only the central and southern Plains will still be active with migrant arrivals, as more northerly locations begin to experience southerly winds. Those interested in flight calling and visible nocturnal migration should pay particularly close attention to illuminated locations on Wednesday to Friday nights, as areas of migration activity, precipitation and low cloud ceiling overlap. Those with abilities to extinguish lights in these locations and during these conditions should consider doing so.

Pied-billed Grebe. Laurie Koepke/Macaulay Library. eBird S32015287.

Pied-billed Grebe. Laurie Koepke/Macaulay Library. eBird S32015287.

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 * 8/2 10/27 After Nov 30 - -
Western Grebe * 9/6 10/17 10/31 After Nov 30 -
Dark-eyed Junco ****! 9/29 10/14 11/20 After Nov 30 -
Herring Gull *** 9/30 10/24 After Nov 30 - -
American Wigeon *** 10/4 10/20 11/4 11/20 After Nov 30
Greater White-fronted Goose *** 10/5 10/18 11/5 11/24 After Nov 30
Green-winged Teal *** 10/5 10/20 11/5 After Nov 30 -
Sandhill Crane *** 10/7 10/18 10/31 11/13 After Nov 30
Horned Grebe *** 10/8 10/21 11/6 11/22 After Nov 30
Gadwall ****! 10/9 10/20 11/7 After Nov 30 -
Northern Pintail *** 10/10 10/23 11/6 After Nov 30 -
Ring-billed Gull *** 10/11 10/23 11/10 After Nov 30 -
Rough-legged Hawk *** 10/12 10/29 After Nov 30 - -
Ruddy Duck ****! 10/13 10/24 11/6 11/21 After Nov 30
Mallard ****! 10/14 10/31 11/17 After Nov 30 -
Ring-necked Duck *** 10/16 10/25 11/5 11/14 11/19
Common Loon *** 10/16 10/27 11/11 After Nov 30 -
Bonaparte's Gull *** 10/16 10/28 11/12 After Nov 30 -
Redhead *** 10/17 10/26 11/8 11/20 After Nov 30
Bald Eagle *** 10/17 11/10 After Nov 30 - -
Northern Shoveler ****! 10/19 10/27 11/7 11/19 After Nov 30
Canvasback *** 10/19 10/28 11/10 After Nov 30 -
Lesser Scaup ****! 10/21 10/30 11/12 After Nov 30 -

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Greater Yellowlegs * - 8/2 10/27 11/16 After Nov 30
Merlin * 8/19 9/6 10/24 11/8 11/24
American White Pelican ** 8/2 9/8 10/18 After Nov 30 -
Western Meadowlark *** 8/2 9/9 10/15 10/29 11/7
Pied-billed Grebe *** 9/3 9/16 10/30 11/13 11/29
Franklin's Gull *** 9/3 9/16 10/16 11/7 After Nov 30
Double-crested Cormorant *** 9/10 9/26 10/23 After Nov 30 -
Red-winged Blackbird *** 9/12 9/26 10/22 After Nov 30 -
Red-tailed Hawk *** 9/5 9/27 10/27 11/9 After Nov 30
Yellow-bellied Sapsucker * 9/12 9/27 After Nov 30 - -
White-throated Sparrow *** 9/16 9/28 10/15 11/6 11/17
Eastern Meadowlark *** 9/21 10/1 10/17 11/7 11/19
Sharp-shinned Hawk ** 8/31 10/2 10/17 10/28 After Nov 30
Swamp Sparrow *** 9/21 10/2 10/16 11/2 11/14
Wilson's Snipe ** 8/2 10/3 10/18 11/3 11/16
Savannah Sparrow *** 9/13 10/3 10/15 10/29 11/8
Field Sparrow *** 9/20 10/4 10/18 11/4 11/15
Le Conte's Sparrow *** 9/25 10/4 10/16 10/28 11/7
American Avocet * 9/23 10/5 10/20 11/12 After Nov 30
Brown Creeper ** 9/18 10/5 After Nov 30 - -
American Pipit *** 9/17 10/6 10/24 11/12 After Nov 30
Song Sparrow *** 9/26 10/8 10/24 11/6 11/17
Pine Siskin ** 9/26 10/9 11/2 After Nov 30 -
Northern Harrier *** 9/12 10/11 10/28 11/12 After Nov 30
Golden-crowned Kinglet ** 9/25 10/12 11/5 11/15 After Nov 30
Dark-eyed Junco ****! 9/29 10/14 11/20 After Nov 30 -
Western Grebe * 9/6 10/17 10/31 After Nov 30 -
Greater White-fronted Goose *** 10/5 10/18 11/5 11/24 After Nov 30
Sandhill Crane *** 10/7 10/18 10/31 11/13 After Nov 30
Gadwall *** 10/9 10/20 11/7 After Nov 30 -
American Wigeon *** 10/4 10/20 11/4 11/20 After Nov 30
Green-winged Teal *** 10/5 10/20 11/5 After Nov 30 -
Horned Grebe *** 10/8 10/21 11/6 11/22 After Nov 30

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Killdeer *** - - Before Aug 1 11/4 After Nov 30
Wood Duck ** - 8/2 8/20 10/28 After Nov 30
Swainson's Hawk *** - 8/2 9/11 10/14 10/22
Blue-winged Teal *** 8/2 8/10 9/13 10/24 11/10
Great Egret *** - 8/2 9/13 10/20 11/11
Nashville Warbler *** 8/27 9/5 9/22 10/14 10/24
Cooper's Hawk ** 8/2 9/5 9/24 10/24 11/8
Clay-colored Sparrow *** 8/20 9/3 9/24 10/16 10/30
Turkey Vulture *** 8/2 9/4 9/27 10/16 10/25
Sora * - 8/2 9/27 10/20 11/4
Scissor-tailed Flycatcher *** 9/6 9/16 9/27 10/19 11/1
Red-shouldered Hawk * 8/2 9/7 9/29 10/28 11/25
Northern Flicker *** 9/7 9/16 10/1 11/4 11/13
Chipping Sparrow *** 9/20 9/24 10/1 11/1 11/13
Orange-crowned Warbler *** 9/5 9/21 10/4 10/17 10/28
Common Grackle *** 9/13 9/20 10/6 10/29 After Nov 30
Ruby-crowned Kinglet *** 9/7 9/21 10/8 10/24 11/8
Sedge Wren *** 9/19 9/28 10/9 10/21 10/31
Marsh Wren *** 9/14 9/27 10/9 10/23 11/5
Spotted Towhee *** 9/9 9/23 10/9 10/25 11/6
Vesper Sparrow *** 9/7 9/23 10/10 10/27 11/6
Nelson's Sparrow ** 9/23 9/30 10/10 10/21 10/29
Sprague's Pipit * 9/19 9/29 10/11 10/25 11/6
Yellow-rumped Warbler *** 9/15 9/26 10/11 10/24 11/15
Lincoln's Sparrow *** 9/6 9/21 10/11 10/29 11/10
Savannah Sparrow *** 9/13 10/3 10/15 10/29 11/8
White-throated Sparrow *** 9/16 9/28 10/15 11/6 11/17
Western Meadowlark *** 8/2 9/9 10/15 10/29 11/7
Franklin's Gull *** 9/3 9/16 10/16 11/7 After Nov 30
Le Conte's Sparrow *** 9/25 10/4 10/16 10/28 11/7
Swamp Sparrow *** 9/21 10/2 10/16 11/2 11/14
Sharp-shinned Hawk ** 8/31 10/2 10/17 10/28 After Nov 30
Eastern Meadowlark *** 9/21 10/1 10/17 11/7 11/19
American White Pelican *** 8/2 9/8 10/18 After Nov 30 -
Wilson's Snipe ** 8/2 10/3 10/18 11/3 11/16
Field Sparrow *** 9/20 10/4 10/18 11/4 11/15
American Avocet *** 9/23 10/5 10/20 11/12 After Nov 30

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Black-bellied Plover * - 8/2 8/21 9/1 11/21
Pectoral Sandpiper ** - - Before Aug 1 9/2 10/23
Tree Swallow ** - - Before Aug 1 9/9 11/1
Forster's Tern ** - 8/2 8/20 9/10 10/19
Lesser Yellowlegs ** - 8/2 8/20 9/13 11/8
Black-crowned Night-Heron * - 8/2 8/27 9/27 10/28
Blue-headed Vireo *** 8/25 9/2 9/16 9/28 10/24
Red-necked Phalarope * 8/2 8/22 9/7 9/29 10/15
Cattle Egret * - - Before Aug 1 10/1 11/2
White-faced Ibis * - 8/2 9/1 10/2 10/30
Tennessee Warbler * 8/2 8/9 9/9 10/3 10/23
Mourning Dove *** - 8/2 8/17 10/4 10/25
Summer Tanager *** 9/2 9/10 9/20 10/4 10/14
Snowy Egret ** - 8/2 8/20 10/5 10/26
Osprey *** 8/28 9/9 9/23 10/6 11/11
House Wren *** 8/25 9/1 9/11 10/6 10/20
Sanderling * 8/2 8/20 9/6 10/7 10/26
Northern Rough-winged Swallow ** - - Before Aug 1 10/7 10/23
Peregrine Falcon * 8/2 9/13 9/24 10/9 10/23
Chimney Swift *** - 8/2 8/15 10/11 10/20
American Golden-Plover * 8/12 9/22 9/30 10/12 11/16
Eastern Phoebe *** 9/1 9/13 9/25 10/12 10/25
Common Yellowthroat *** 8/30 9/6 9/20 10/12 10/21
Indigo Bunting *** 9/7 9/11 9/20 10/12 10/21
Black-throated Green Warbler * 8/20 9/2 9/22 10/13 10/28
Swainson's Hawk *** - 8/2 9/11 10/14 10/22
Nashville Warbler *** 8/27 9/5 9/22 10/14 10/24
Turkey Vulture *** 8/2 9/4 9/27 10/16 10/25
Clay-colored Sparrow *** 8/20 9/3 9/24 10/16 10/30
Orange-crowned Warbler *** 9/5 9/21 10/4 10/17 10/28
Scissor-tailed Flycatcher *** 9/6 9/16 9/27 10/19 11/1
Great Egret *** - 8/2 9/13 10/20 11/11
Sora * - 8/2 9/27 10/20 11/4
Sedge Wren *** 9/19 9/28 10/9 10/21 10/31
Nelson's Sparrow ** 9/23 9/30 10/10 10/21 10/29

West

Conditions will be unfavorable for migration across the region for the first half of the forecast period. Southerly flow and precipitation will keep migrants grounded. In addition, a significant and strong storm system arrives in the Pacific Northwest to kick off the weekend, bringing a dangerous mix of heavy rains, strong wind, and generally intense weather to the region. This storm may force large numbers of seabirds and waterbirds in offshore and near shore coastal areas to shore, but dangerous conditions in coastal locations may prevent anyone from seeing such displacements. By Monday and Tuesday nights increasing areas of more favorable conditions appear, with light to moderate movements in the California, the Great Basin and Desert Southwest by Tuesday night. Wednesday night will see the greatest extents of these favorable conditions, and so too the most extensive light to moderate flights across much of the southern half of the region. The end of the week will see these extents generally restricted to more southern and eastern locations, with the potential for intensities to increase locally in the favorable conditions over the eastern and southern Rockies.

Red-tailed Hawk. James Hoagland/Macaulay Library. eBird S31973538.

Red-tailed Hawk. James Hoagland/Macaulay Library. eBird S31973538.

Species on the Move

Beginning Arrivals What is this?

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Canada Goose ** 8/2 11/4 After Nov 30 - -
Pied-billed Grebe ** 8/2 10/19 11/11 After Nov 30 -
California Gull * 8/2 10/22 11/7 After Nov 30 -
Ring-billed Gull ** 8/10 11/7 11/22 After Nov 30 -
Northern Harrier ** 8/17 11/8 11/20 After Nov 30 -
Red-necked Grebe * 8/26 10/20 11/3 11/13 11/20
American Wigeon *** 9/2 10/17 11/22 After Nov 30 -
Sandhill Crane * 9/14 11/10 11/18 After Nov 30 -
Horned Grebe ** 9/20 10/21 11/8 11/15 11/19
Ring-necked Duck *** 9/21 10/17 11/20 After Nov 30 -
Ruddy Duck *** 9/21 10/14 11/18 After Nov 30 -
Bald Eagle ** 9/26 10/19 After Nov 30 - -
Mew Gull ** 10/1 10/22 11/20 After Nov 30 -
Redhead ** 10/3 10/14 11/14 After Nov 30 -
Western Grebe *** 10/3 10/14 11/2 After Nov 30 -
Dunlin *** 10/5 10/15 10/30 After Nov 30 -
Gadwall *** 10/7 10/25 11/17 After Nov 30 -
Surf Scoter *** 10/7 10/21 11/10 11/15 11/18
Greater Scaup ** 10/8 10/20 After Nov 30 - -
Lesser Scaup *** 10/8 10/26 11/19 After Nov 30 -
Clark's Grebe * 10/8 10/18 11/6 After Nov 30 -
Canvasback *** 10/9 11/4 11/19 After Nov 30 -
Glaucous-winged Gull ** 10/10 10/23 After Nov 30 - -
White-winged Scoter * 10/11 10/20 11/5 11/15 After Nov 30
Common Loon *** 10/12 10/23 11/4 11/14 11/22
Rough-legged Hawk * 10/12 11/29 After Nov 30 - -
Pacific Loon * 10/14 10/29 11/24 After Nov 30 -
Bufflehead ****! 10/16 10/29 After Nov 30 - -
Bonaparte's Gull *** 10/17 10/28 11/10 After Nov 30 -
Hooded Merganser *** 10/19 11/2 After Nov 30 - -
Red-breasted Merganser *** 10/20 11/2 11/20 After Nov 30 -
Trumpeter Swan * 10/21 11/4 After Nov 30 - -

Peaking Arrivals

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Belted Kingfisher ** - 8/2 10/22 After Nov 30 -
Northern Shoveler *** 8/6 8/20 11/20 After Nov 30 -
Northern Pintail ** 8/12 8/20 11/19 After Nov 30 -
Green-winged Teal ** 8/2 8/20 11/17 After Nov 30 -
Black Phoebe ** 8/16 9/9 11/17 After Nov 30 -
Sharp-shinned Hawk * 8/23 9/10 10/19 11/11 After Nov 30
Red-tailed Hawk *** 8/7 9/10 After Nov 30 - -
American Pipit ** 8/31 9/11 11/15 After Nov 30 -
Say's Phoebe ** 9/1 9/13 11/21 After Nov 30 -
Merlin * 8/30 9/14 11/9 11/28 After Nov 30
Eared Grebe *** 9/2 9/16 11/11 After Nov 30 -
Marsh Wren * 8/21 9/20 10/29 After Nov 30 -
Fox Sparrow *** 9/9 9/23 10/20 11/1 11/8
Golden-crowned Sparrow *** 9/13 9/26 10/19 10/26 11/18
Yellow-rumped Warbler ****! 9/13 9/27 10/14 10/23 11/3
Northern Flicker *** 9/5 9/29 10/16 11/8 11/22
Varied Thrush ** 9/18 9/29 After Nov 30 - -
Western Meadowlark *** 9/16 9/30 10/16 After Nov 30 -
Cackling Goose ** 9/16 10/3 After Nov 30 - -
Ruby-crowned Kinglet *** 9/21 10/3 11/5 11/10 11/12
White-throated Sparrow * 9/20 10/3 10/28 11/5 11/10
Golden-crowned Kinglet ** 9/10 10/4 10/23 11/6 11/18
Dark-eyed Junco *** 9/23 10/5 11/8 11/13 11/16
Hermit Thrush *** 9/25 10/6 10/26 11/6 11/15
Herring Gull ** 9/28 10/13 After Nov 30 - -
Redhead * 10/3 10/14 11/14 After Nov 30 -
Ruddy Duck ** 9/21 10/14 11/18 After Nov 30 -
Western Grebe *** 10/3 10/14 11/2 After Nov 30 -
Dunlin ** 10/5 10/15 10/30 After Nov 30 -
American Wigeon *** 9/2 10/17 11/22 After Nov 30 -
Ring-necked Duck *** 9/21 10/17 11/20 After Nov 30 -
Clark's Grebe * 10/8 10/18 11/6 After Nov 30 -
Pied-billed Grebe ** 8/2 10/19 11/11 After Nov 30 -
Bald Eagle ** 9/26 10/19 After Nov 30 - -
Greater Scaup * 10/8 10/20 After Nov 30 - -
White-winged Scoter * 10/11 10/20 11/5 11/15 After Nov 30
Red-necked Grebe * 8/26 10/20 11/3 11/13 11/20
Surf Scoter ** 10/7 10/21 11/10 11/15 11/18
Horned Grebe ** 9/20 10/21 11/8 11/15 11/19

Beginning Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Greater Yellowlegs * 8/11 8/18 8/28 After Nov 30 -
Elegant Tern * 8/2 8/21 9/7 After Nov 30 -
Red-breasted Nuthatch * - 8/2 9/7 10/19 10/30
Chipping Sparrow *** - 8/2 9/8 10/18 11/2
Pink-footed Shearwater * 8/8 8/27 9/14 10/25 11/7
Clay-colored Sparrow * 8/17 8/28 9/14 10/18 11/6
Orange-crowned Warbler *** 8/18 9/1 9/18 10/15 10/27
Mountain Bluebird * 9/3 9/8 9/19 10/17 10/27
Blue-winged Teal * - 8/2 9/22 10/23 11/3
Savannah Sparrow ** 8/2 9/3 9/23 10/24 11/2
Brewer's Blackbird ** 8/23 9/11 9/27 10/20 After Nov 30
Black-bellied Plover * 9/12 9/18 9/30 After Nov 30 -
Cooper's Hawk * 8/2 9/7 10/1 10/24 11/11
Townsend's Warbler ** 8/13 8/30 10/2 10/22 11/6
Red-shouldered Hawk * 8/17 9/12 10/3 After Nov 30 -
Black-throated Gray Warbler *** - 8/2 10/4 10/19 10/29
Lincoln's Sparrow ** 8/30 9/11 10/4 10/21 11/5
Red-naped Sapsucker * 9/6 9/19 10/7 10/22 11/3
American Robin ** 8/30 9/4 10/10 10/17 11/14
Red-winged Blackbird ** 8/25 9/12 10/10 10/27 After Nov 30
White-crowned Sparrow *** 9/6 9/21 10/11 10/21 10/31
Yellow-rumped Warbler *** 9/13 9/27 10/14 10/23 11/3
Northern Flicker *** 9/5 9/29 10/16 11/8 11/22
Western Meadowlark * 9/16 9/30 10/16 After Nov 30 -
Sharp-shinned Hawk * 8/23 9/10 10/19 11/11 After Nov 30
Golden-crowned Sparrow * 9/13 9/26 10/19 10/26 11/18
Fox Sparrow * 9/9 9/23 10/20 11/1 11/8

Ending Departures

Species Noticeability Migrants Begin Arriving Rapid Migrant Influx Peak Rapid Migrant Departure Last Migrants Depart
Violet-green Swallow *** - - Before Aug 1 8/3 10/23
Hermit Warbler * - 8/2 8/19 9/3 10/23
House Wren *** 8/23 8/31 9/9 9/21 10/26
Green Heron * 8/2 8/10 8/28 9/23 10/17
Sora * 8/21 9/1 9/13 9/23 After Nov 30
American White Pelican * 8/2 8/13 9/2 9/27 10/19
Vesper Sparrow ** 8/24 9/2 9/13 9/27 10/15
Marbled Godwit * 8/9 8/17 8/28 9/29 After Nov 30
American Avocet * 8/15 8/21 8/30 9/30 After Nov 30
Parasitic Jaeger * 8/26 9/6 9/19 10/1 10/29
Black Turnstone * 8/6 8/17 9/21 10/2 After Nov 30
Heermann's Gull * 8/15 9/14 9/21 10/2 After Nov 30
Yellow Warbler *** - 8/2 9/8 10/2 10/21
Killdeer *** 8/2 8/14 9/7 10/3 11/3
Franklin's Gull * - 8/2 8/31 10/3 11/5
Vaux's Swift ** 8/28 9/5 9/14 10/3 10/20
Pacific-slope Flycatcher *** 8/14 8/25 9/12 10/3 10/17
Turkey Vulture *** 8/14 9/9 9/17 10/5 10/17
Common Yellowthroat *** 8/18 8/30 9/15 10/5 10/27
Pectoral Sandpiper ** 8/16 8/25 9/20 10/9 10/24
Greater White-fronted Goose ** 9/13 9/21 10/3 10/12 10/19
Orange-crowned Warbler *** 8/18 9/1 9/18 10/15 10/27
Mountain Bluebird * 9/3 9/8 9/19 10/17 10/27
American Robin * 8/30 9/4 10/10 10/17 11/14
Chipping Sparrow *** - 8/2 9/8 10/18 11/2
Clay-colored Sparrow * 8/17 8/28 9/14 10/18 11/6
Red-breasted Nuthatch *** - 8/2 9/7 10/19 10/30
Black-throated Gray Warbler *** - 8/2 10/4 10/19 10/29
Brewer's Blackbird * 8/23 9/11 9/27 10/20 After Nov 30
Lincoln's Sparrow ** 8/30 9/11 10/4 10/21 11/5
White-crowned Sparrow *** 9/6 9/21 10/11 10/21 10/31

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