Merlin, Luke Seitz
Continental Summary
While the favorable conditions in the West arrive during the middle of the period and bring light to moderate movement featuring Western Grebe, Northern Shoveler, Ruddy Duck, Hermit Thrush, Ruby-crowned Kinglet, White-crowned Sparrow, and Dark-eyed Junco, the East experiences more favorable conditions for several waves of moderate to heavy flights featuring American White Pelican, Merlin, Wilson’s Snipe, Marsh Wren, Sedge Wren, Lincoln’s Sparrow, Savannah Sparrow.
Wondering what species are migrating through right now? Check out our analysis for the past 7 days. Also check out our automated traffic reports describing the density and direction of nocturnal migration in the northeastern US.
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.
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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
The rapid passage of a low pressure system brings a pulse of moderate to heavy flights to kickoff the weekend, followed by a blast of warmer air that dampens the intensity of flights through Monday. But another strong frontal boundary moves across the region on Monday, bringing a new wave of moderate to heavy and locally very heavy flights. These flights are heaviest on Monday and Tuesday nights, followed by periods of continuing locally moderate to heavy flights through the remainder of the period. The distribution of these flights will depend heavily on precipitation and its extent and intensity; also, note that this time of the season frequently features large concentrations and fallouts of migrants when waves of birds aloft encounter precipitation and poor visibility conditions.
Wilson’s Snipe, Luke Seitz
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
Great Cormorant
*
9/3
11/12
After Dec 31
-
-
Song Sparrow
NA
9/8
10/10
10/20
11/1
-
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
-
-
American Black Duck
***
9/19
10/15
11/28
12/14
-
Surf Scoter
**
9/23
10/11
11/8
11/26
12/8
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
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
-
-
Horned Grebe
***
10/10
10/25
11/14
12/1
12/15
Rough-legged Hawk
*
10/10
12/10
After Dec 31
-
-
Bonaparte's Gull
***
10/10
10/24
11/11
11/29
12/15
Long-tailed Duck
**
10/11
10/27
After Dec 31
-
-
Short-eared Owl
*
10/11
11/27
12/18
-
-
Snow Bunting
***
10/12
10/23
11/9
11/22
12/1
Common Merganser
**
10/13
11/25
12/22
After Dec 31
-
American Tree Sparrow
***
10/13
10/28
After Dec 31
-
-
Black-legged Kittiwake
*
10/14
10/29
11/19
-
-
Western Kingbird
*
10/15
10/26
11/9
11/26
12/7
Red-throated Loon
**
10/16
11/3
11/22
12/5
12/15
Peaking Arrivals
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Green-winged Teal
**
8-Aug
22-Aug
27-Oct
22-Nov
10-Dec
Bald Eagle
*
Before July 1
2-Sep
6-Nov
-
-
Lapland Longspur
*
3-Sep
15-Sep
10-Nov
-
-
American Pipit
**
5-Sep
21-Sep
22-Oct
17-Nov
4-Dec
Harris's Sparrow
*
8-Sep
22-Sep
12-Oct
28-Oct
10-Nov
Savannah Sparrow
***
10-Sep
24-Sep
12-Oct
29-Oct
12-Nov
Eastern Bluebird
***
9-Sep
25-Sep
19-Oct
11-Nov
29-Nov
American Robin
***
11-Sep
25-Sep
13-Oct
9-Nov
26-Nov
Orange-crowned Warbler
**
14-Sep
25-Sep
10-Oct
25-Oct
5-Nov
Nelson's Sparrow
*
14-Sep
25-Sep
10-Oct
25-Oct
4-Nov
Northern Harrier
**
1-Aug
26-Sep
20-Oct
10-Nov
27-Nov
Yellow-rumped Warbler
****!
16-Sep
27-Sep
13-Oct
28-Oct
9-Nov
Chipping Sparrow
***
18-Sep
27-Sep
9-Oct
30-Oct
13-Nov
Brown Creeper
***
15-Sep
28-Sep
17-Oct
30-Oct
9-Nov
Winter Wren
***
14-Sep
28-Sep
17-Oct
31-Oct
12-Nov
Ruby-crowned Kinglet
****!
16-Sep
28-Sep
14-Oct
30-Oct
11-Nov
Swamp Sparrow
***
16-Sep
28-Sep
14-Oct
30-Oct
12-Nov
Le Conte's Sparrow
*
17-Sep
29-Sep
15-Oct
31-Oct
12-Nov
White-throated Sparrow
****!
16-Sep
29-Sep
19-Oct
2-Nov
13-Nov
Eastern Meadowlark
**
17-Sep
29-Sep
16-Oct
2-Nov
17-Nov
Golden-crowned Kinglet
***
18-Sep
30-Sep
18-Oct
2-Nov
15-Nov
White-crowned Sparrow
***
19-Sep
30-Sep
15-Oct
30-Oct
10-Nov
Cackling Goose
*
12-Sep
1-Oct
8-Dec
-
-
Wilson's Snipe
*
6-Aug
1-Oct
16-Oct
2-Nov
19-Nov
Field Sparrow
***
21-Sep
2-Oct
16-Oct
3-Nov
15-Nov
Northern Pintail
*
1-Sep
3-Oct
31-Oct
20-Nov
11-Dec
Hermit Thrush
***
20-Sep
3-Oct
19-Oct
5-Nov
17-Nov
Red-winged Blackbird
***
21-Sep
3-Oct
19-Oct
7-Nov
23-Nov
Rusty Blackbird
**
18-Sep
3-Oct
23-Oct
10-Nov
25-Nov
American Wigeon
**
9-Sep
5-Oct
1-Nov
23-Nov
19-Dec
Vesper Sparrow
*
24-Sep
6-Oct
21-Oct
7-Nov
18-Nov
Purple Finch
***
21-Sep
6-Oct
24-Oct
11-Nov
25-Nov
Common Grackle
**
1-Oct
8-Oct
18-Oct
8-Nov
23-Nov
Dunlin
*
15-Sep
9-Oct
31-Oct
20-Nov
6-Dec
Pine Siskin
***
24-Sep
9-Oct
29-Oct
14-Nov
27-Nov
Pied-billed Grebe
***
12-Sep
10-Oct
31-Oct
22-Nov
11-Dec
Song Sparrow
***
8-Sep
10-Oct
20-Oct
1-Nov
-
Saltmarsh Sparrow
*
15-Sep
10-Oct
20-Oct
5-Nov
15-Nov
Brant
**
28-Sep
11-Oct
3-Nov
-
-
Surf Scoter
*
23-Sep
11-Oct
8-Nov
26-Nov
8-Dec
American Woodcock
*
27-Sep
12-Oct
26-Oct
13-Nov
25-Nov
Greater White-fronted Goose
*
27-Sep
13-Oct
After Dec 31
-
-
American Coot
***
26-Sep
14-Oct
6-Nov
26-Nov
20-Dec
Dark-eyed Junco
****!
28-Sep
14-Oct
2-Nov
-
-
American Black Duck
**
19-Sep
15-Oct
28-Nov
14-Dec
-
Northern Shoveler
**
9-Aug
15-Oct
10-Nov
1-Dec
16-Dec
Northern Goshawk
*
3-Oct
16-Oct
30-Oct
16-Nov
28-Nov
Northern Saw-whet Owl
*
3-Oct
16-Oct
1-Nov
15-Nov
24-Nov
Beginning Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Killdeer
***
-
Before July 1
8/2
10/28
11/26
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
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
Gray Catbird
***
8/28
9/6
9/17
10/9
10/24
Common Yellowthroat
***
8/25
9/3
9/18
10/9
10/24
Belted Kingfisher
***
Before July 1
7/27
9/20
10/14
-
Sora
*
8/12
8/28
9/21
10/16
10/30
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
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
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
Savannah Sparrow
***
9/10
9/24
10/12
10/29
11/12
Harris's Sparrow
*
9/8
9/22
10/12
10/28
11/10
American Robin
***
9/11
9/25
10/13
11/9
11/26
Yellow-rumped Warbler
***
9/16
9/27
10/13
10/28
11/9
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-crowned Sparrow
***
9/19
9/30
10/15
10/30
11/10
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
Eastern Meadowlark
*
9/17
9/29
10/16
11/2
11/17
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
Little Blue Heron
*
Before July 1
7/21
8/9
8/26
10/20
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
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
Forster's Tern
*
-
Before July 1
8/17
9/18
11/30
Bobolink
**
8/5
8/16
8/31
9/19
10/15
Eastern Wood-Pewee
***
8/5
8/16
8/29
9/22
10/9
Black Skimmer
*
-
Before July 1
7/23
9/22
10/21
Pectoral Sandpiper
*
Before July 1
7/18
8/16
9/24
11/20
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
Chimney Swift
***
-
-
8/5
10/10
10/25
Pine Warbler
***
8/22
9/5
9/22
10/11
10/25
Indigo Bunting
***
9/9
9/14
9/24
10/11
10/23
Black-throated Blue Warbler
***
8/22
9/6
9/23
10/12
10/26
Northern Flicker
***
8/28
9/9
9/26
10/13
10/30
Snowy Egret
**
-
Before July 1
8/7
10/15
11/3
Osprey
***
-
Before July 1
8/16
10/15
11/8
Sora
*
8/12
8/28
9/21
10/16
10/30
Gulf Coast and Southeast
Moderare to heavy weekend flights gradually decrease in intensity and extent through Monday, as the favorable weekend conditions give way to more southerly flow. However, Monday and Tuesday see the movement of a frontal boundary through the region, which will bring patterns similar to those occurring to the north of moderate to locally very heavy movements across the region. As the week continues, these flights will continue where favorable conditions persist but will become increasingly localized tower the end of the period.
Sedge Wren, Chris Wood
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 Bittern
*
9/12
10/14
11/25
-
-
Wilson's Snipe
**
9/20
10/19
12/15
-
-
Eastern Phoebe
****!
9/22
10/11
10/31
11/12
-
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
Common Grackle
***
9/26
10/11
10/25
11/10
11/20
Northern Harrier
***
9/26
10/21
11/17
-
-
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
-
-
Common Gallinule
**
10/11
10/26
11/18
-
-
Eared Grebe
*
10/11
10/29
After Dec 31
-
-
Field Sparrow
***
10/11
10/22
12/17
-
-
Hermit Thrush
***
10/11
10/22
12/16
-
-
Sprague's Pipit
*
10/11
10/21
11/7
-
-
Black Scoter
*
10/12
12/30
After Dec 31
-
-
Chipping Sparrow
***
10/12
10/23
12/17
After Dec 31
-
Green-winged Teal
***
10/12
10/26
11/21
-
-
Gadwall
***
10/13
10/27
12/10
-
-
Northern Pintail
***
10/13
10/27
11/19
-
-
Pine Siskin
**
10/13
10/27
After Dec 31
-
-
Purple Finch
*
10/13
10/25
After Dec 31
-
-
American Pipit
***
10/14
10/29
12/11
-
-
Ruddy Duck
***
10/14
10/29
11/25
12/15
-
Brewer's Blackbird
*
10/15
11/7
After Dec 31
-
-
Dark-eyed Junco
***
10/15
10/29
12/14
-
-
Northern Shoveler
***
10/15
10/29
11/24
-
-
Ring-necked Duck
***
10/15
11/1
12/8
After Dec 31
-
Snow Goose
**
10/16
11/2
12/7
-
-
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
-
-
Sora
*
8/29
9/10
12/18
-
-
Cooper's Hawk
**
7/29
9/11
10/24
11/11
11/22
Belted Kingfisher
***
8/12
9/14
10/26
-
-
Eastern Towhee
**
9/7
9/15
10/21
11/8
11/22
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
-
-
Northern Mockingbird
***
9/6
9/20
10/12
-
-
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
-
-
Lincoln's Sparrow
***
9/24
10/10
10/29
-
-
Yellow-bellied Sapsucker
***
9/26
10/10
12/17
After Dec 31
-
Common Grackle
**
9/26
10/11
10/25
11/10
11/20
Eastern Phoebe
***
9/22
10/11
10/31
11/12
-
Saltmarsh Sparrow
*
9/29
10/12
12/11
After Dec 31
-
Red-winged Blackbird
***
9/24
10/13
11/7
11/19
11/30
American Bittern
*
9/12
10/14
11/25
-
-
Sedge Wren
*
9/30
10/14
12/18
-
-
Black Vulture
*
8/25
10/15
After Dec 31
-
-
Virginia Rail
*
10/3
10/15
12/20
-
-
Eastern Meadowlark
***
10/2
10/16
11/3
11/14
-
Ruby-crowned Kinglet
***
10/1
10/16
12/15
-
-
Swamp Sparrow
**
10/4
10/16
12/16
-
-
Beginning Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Eastern Wood-Pewee
***
8/16
9/1
9/19
10/12
10/29
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
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
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
Blackpoll Warbler
*
9/13
9/25
10/10
10/26
11/6
Gray Catbird
***
9/12
9/24
10/10
10/26
11/7
Merlin
*
9/3
9/17
10/11
11/1
11/18
Painted Bunting
**
9/26
10/3
10/13
10/29
11/8
Northern Rough-winged Swallow
**
-
-
10/14
11/3
11/18
Ending Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Least Bittern
*
-
-
Before July 1
1-Aug
18-Oct
Blue Grosbeak
**
-
-
Before July 1
26-Aug
1-Nov
Barn Swallow
***
-
Before July 1
8-Aug
8-Sep
5-Nov
Sandwich Tern
*
Before July 1
28-Jul
19-Aug
8-Sep
9-Dec
Stilt Sandpiper
*
5-Jul
21-Jul
15-Aug
14-Sep
21-Nov
Black-necked Stilt
*
14-Jul
27-Jul
11-Aug
16-Sep
28-Nov
Gray Kingbird
*
-
-
14-Aug
16-Sep
11-Oct
Semipalmated Sandpiper
**
Before July 1
15-Jul
23-Aug
16-Sep
15-Oct
Black-chinned Hummingbird
**
-
-
Before July 1
20-Sep
10-Oct
Green Heron
***
-
-
Before July 1
20-Sep
9-Oct
Bell's Vireo
*
8-Aug
18-Aug
29-Aug
23-Sep
10-Oct
Prothonotary Warbler
**
2-Aug
11-Aug
28-Aug
23-Sep
9-Oct
Baird's Sandpiper
*
8-Jul
28-Jul
20-Aug
24-Sep
9-Oct
Common Tern
*
Before July 1
20-Jul
22-Aug
24-Sep
9-Nov
Dickcissel
*
10-Aug
19-Aug
2-Sep
24-Sep
16-Oct
Kentucky Warbler
*
4-Aug
15-Aug
2-Sep
24-Sep
9-Oct
Yellow-crowned Night-Heron
*
-
-
Before July 1
24-Sep
21-Oct
Willow Flycatcher
*
5-Aug
19-Aug
5-Sep
25-Sep
9-Oct
Yellow-breasted Chat
**
13-Aug
23-Aug
7-Sep
25-Sep
9-Oct
Canada Warbler
**
13-Aug
24-Aug
9-Sep
26-Sep
9-Oct
Cave Swallow
*
-
-
1-Sep
26-Sep
26-Nov
Mourning Warbler
**
15-Aug
27-Aug
12-Sep
28-Sep
10-Oct
Yellow Warbler
***
29-Jul
16-Aug
7-Sep
29-Sep
15-Oct
Baltimore Oriole
***
18-Aug
30-Aug
14-Sep
30-Sep
10-Oct
Blue-gray Gnatcatcher
***
4-Aug
25-Aug
13-Sep
1-Oct
14-Oct
Least Flycatcher
***
15-Aug
30-Aug
14-Sep
1-Oct
13-Oct
Warbling Vireo
*
23-Aug
3-Sep
17-Sep
3-Oct
14-Oct
Yellow-bellied Flycatcher
*
15-Aug
31-Aug
15-Sep
3-Oct
15-Oct
Yellow-throated Vireo
***
16-Aug
30-Aug
15-Sep
3-Oct
17-Oct
Blue-winged Warbler
**
19-Aug
1-Sep
17-Sep
4-Oct
16-Oct
Summer Tanager
***
19-Aug
31-Aug
15-Sep
4-Oct
19-Oct
Wilson's Warbler
***
23-Aug
4-Sep
19-Sep
4-Oct
14-Oct
Worm-eating Warbler
**
9-Aug
29-Aug
15-Sep
4-Oct
17-Oct
Acadian Flycatcher
***
20-Aug
1-Sep
16-Sep
5-Oct
18-Oct
Ruby-throated Hummingbird
***
26-Jul
30-Aug
13-Sep
5-Oct
20-Oct
Swainson's Warbler
*
14-Aug
25-Aug
13-Sep
5-Oct
24-Oct
Veery
***
28-Aug
7-Sep
21-Sep
5-Oct
16-Oct
Chuck-will's-widow
*
15-Aug
31-Aug
17-Sep
6-Oct
20-Oct
Red-headed Woodpecker
**
24-Aug
4-Sep
18-Sep
6-Oct
11-Nov
Golden-winged Warbler
*
27-Aug
7-Sep
22-Sep
7-Oct
19-Oct
Northern Waterthrush
***
19-Aug
3-Sep
19-Sep
7-Oct
21-Oct
Red-eyed Vireo
***
22-Aug
5-Sep
19-Sep
8-Oct
23-Oct
Blackburnian Warbler
**
24-Aug
6-Sep
22-Sep
9-Oct
23-Oct
Bobolink
*
21-Aug
4-Sep
21-Sep
9-Oct
23-Oct
Chestnut-sided Warbler
***
25-Aug
6-Sep
22-Sep
10-Oct
23-Oct
Chimney Swift
***
27-Aug
7-Sep
20-Sep
11-Oct
25-Oct
Hooded Warbler
***
3-Aug
3-Sep
20-Sep
11-Oct
27-Oct
White-eyed Vireo
***
19-Aug
3-Sep
20-Sep
11-Oct
30-Oct
Eastern Wood-Pewee
***
16-Aug
1-Sep
19-Sep
12-Oct
29-Oct
Broad-winged Hawk
**
28-Aug
9-Sep
25-Sep
13-Oct
1-Nov
Prairie Warbler
***
23-Jul
8-Sep
23-Sep
13-Oct
30-Oct
Scarlet Tanager
***
31-Aug
12-Sep
27-Sep
15-Oct
28-Oct
Swainson's Thrush
***
3-Sep
14-Sep
29-Sep
15-Oct
27-Oct
American Redstart
***
29-Aug
11-Sep
28-Sep
16-Oct
30-Oct
Cape May Warbler
**
31-Aug
12-Sep
29-Sep
16-Oct
31-Oct
Ovenbird
***
26-Aug
9-Sep
27-Sep
16-Oct
2-Nov
Great Plains
A generally unfavorable weekend for migration will see locally moderate flights where conditions permit. Following this period of southerly flow, a pulse of cooler air and northerly winds arrive on Monday and with it comes moderate to very heavy flights across the region. These flights continue, albeit localized to the northern and central Plains, for Tuesday and Wednesday nights. An excellent diurnal flight is likely on Thursday, as favorable conditions prevail; but alas these do not continue into nocturnal periods, and nocturnal flights will not be as extensive as the earlier period movements.
American White Pelican, 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
-
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
-
-
Winter Wren
*
9/16
10/11
11/3
-
-
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
-
-
Redhead
***
10/10
10/22
11/7
11/24
12/8
Snow Bunting
**
10/10
10/20
11/5
-
-
American Tree Sparrow
***
10/11
10/23
12/21
-
-
Mallard
****!
10/11
10/26
11/17
12/3
-
Northern Shoveler
***
10/11
10/22
11/6
11/22
12/5
Bonaparte's Gull
***
10/12
10/27
11/14
12/1
12/14
Common Loon
***
10/12
10/24
11/10
11/26
12/10
Short-eared Owl
*
10/12
12/12
After Dec 31
-
-
Canvasback
***
10/13
10/25
11/11
11/27
12/8
Whooping Crane
*
10/13
10/24
11/8
11/24
12/6
Lesser Scaup
***
10/14
10/26
11/13
11/28
12/11
Bald Eagle
***
10/16
11/5
After Dec 31
-
-
Common Redpoll
*
10/16
11/2
After Dec 31
-
-
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
Canada Goose
**
-
9/16
11/25
-
-
Franklin's Gull
***
9/1
9/16
10/13
11/10
11/25
Ruby-crowned Kinglet
***
9/6
9/21
10/10
10/27
11/10
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
Lincoln's Sparrow
***
9/8
9/23
10/10
10/28
11/10
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
Surf Scoter
*
9/26
10/10
10/28
11/15
11/30
Northern Harrier
***
9/24
10/11
10/29
11/12
11/21
Pine Siskin
*
8/23
10/11
12/28
-
-
Winter Wren
*
9/16
10/11
11/3
-
-
Golden-crowned Kinglet
*
9/27
10/12
12/15
After Dec 31
-
Dark-eyed Junco
***
9/26
10/13
12/29
-
-
Brown Creeper
**
9/27
10/14
12/20
-
-
Fox Sparrow
***
10/2
10/14
10/30
11/12
11/24
Thayer's Gull
*
9/28
10/14
12/11
-
-
Tundra Swan
*
9/28
10/15
10/30
11/18
11/30
Sandhill Crane
***
10/5
10/16
10/30
11/15
11/25
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
Wood Duck
**
Before July 1
7/1
8/19
10/27
11/19
Chipping Sparrow
***
-
-
9/1
10/31
11/14
Great Egret
***
-
7/15
9/11
10/16
11/10
Blue-winged Teal
***
8/2
8/18
9/18
10/25
11/13
Peregrine Falcon
*
Before July 1
7/26
9/19
10/10
10/28
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
Lincoln's Sparrow
***
9/8
9/23
10/10
10/28
11/10
Nelson's Sparrow
*
9/17
9/27
10/10
10/25
11/4
Ruby-crowned Kinglet
***
9/6
9/21
10/10
10/27
11/10
Sedge Wren
**
9/16
9/26
10/10
10/26
11/6
Sprague's Pipit
*
9/15
9/27
10/11
10/28
11/8
Franklin's Gull
***
9/1
9/16
10/13
11/10
11/25
Savannah Sparrow
***
9/14
9/27
10/13
10/30
11/12
Yellow-rumped Warbler
***
9/12
9/25
10/13
10/29
11/10
Hermit Thrush
*
9/15
9/28
10/15
10/30
-
American White Pelican
**
8/22
9/9
10/16
11/18
12/9
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
Pectoral Sandpiper
**
Before July 1
7/20
8/10
8/26
10/20
Tree Swallow
**
-
-
Before July 1
9/4
11/8
Forster's Tern
**
Before July 1
7/26
8/20
9/15
10/26
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
Red-headed Woodpecker
***
7/31
8/13
8/27
9/23
10/13
Rose-breasted Grosbeak
**
8/12
8/22
9/4
9/25
10/10
Black-crowned Night-Heron
*
-
-
9/5
9/26
10/12
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
Chimney Swift
***
-
7/25
8/10
10/10
10/25
Indigo Bunting
***
9/1
9/15
10/1
10/10
10/21
Nashville Warbler
***
8/24
9/6
9/23
10/10
10/24
Peregrine Falcon
*
Before July 1
7/26
9/19
10/10
10/28
Osprey
***
8/25
9/7
9/24
10/11
11/12
Palm Warbler
**
8/31
9/11
9/27
10/13
10/25
Eastern Phoebe
***
8/27
9/9
9/23
10/14
10/29
Clay-colored Sparrow
***
8/20
9/3
9/24
10/16
10/31
Great Egret
***
-
7/15
9/11
10/16
11/10
Turkey Vulture
***
8/20
9/8
9/22
10/16
10/30
West
An unfavorable start to the period gives way to much more favorable conditions by Monday, when light to moderate movements are likely from the Desert Southwest east and north along the Rockies. Some of the movements east of the Rockies may be locally heavy. While these favorable conditions persist in the Rockies and immediate environs, allowing similarly intense movements to continue, the remainder of the region experiences marginal conditions where primarily light movements will occur. By the end of the period, the entire region experiences similar marginal conditions at region wide extents, and light movements will be the norm. Note that some areas, particularly in the Four Corners and portions of the northern and central Rockies, will see more favorable conditions and more intense, primarily moderate, movements.
Western Grebe, 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
-
-
Western Grebe
***
9/15
10/14
11/5
11/24
12/9
Harris's Sparrow
*
9/18
10/14
After Dec 31
-
-
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
-
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
-
-
Rock Sandpiper
*
10/10
10/24
11/14
-
-
American Tree Sparrow
*
10/11
10/24
11/15
11/26
12/7
Canvasback
***
10/11
10/28
11/23
12/4
12/11
Snow Bunting
*
10/13
10/24
11/10
-
-
Bonaparte's Gull
***
10/13
10/24
11/10
11/26
12/9
Long-tailed Duck
*
10/14
10/28
11/18
12/1
12/10
Bufflehead
****!
10/15
10/29
11/22
12/3
12/10
Rusty Blackbird
*
10/16
10/30
11/18
12/2
12/12
Peaking Arrivals
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
California Gull
*
Before July 1
14-Jul
9-Nov
26-Nov
10-Dec
Green-winged Teal
**
7-Aug
20-Aug
21-Nov
-
-
Northern Shoveler
***
5-Aug
20-Aug
22-Nov
-
-
Northern Pintail
**
9-Aug
22-Aug
19-Nov
-
-
Belted Kingfisher
**
15-Aug
5-Sep
27-Oct
10-Nov
-
Black Phoebe
**
20-Aug
6-Sep
30-Oct
-
-
Sharp-shinned Hawk
*
23-Aug
9-Sep
22-Oct
8-Nov
-
Red-winged Blackbird
**
24-Aug
11-Sep
10-Oct
31-Oct
21-Nov
Red-tailed Hawk
***
18-Aug
12-Sep
After Dec 31
-
-
Merlin
*
29-Aug
13-Sep
22-Dec
-
-
American Pipit
**
30-Aug
14-Sep
7-Nov
-
-
White-crowned Sparrow
****!
4-Sep
20-Sep
14-Oct
26-Oct
6-Nov
Red-naped Sapsucker
*
8-Sep
22-Sep
9-Oct
24-Oct
4-Nov
Fox Sparrow
***
9-Sep
24-Sep
19-Oct
-
-
Sandhill Crane
*
12-Sep
24-Sep
18-Nov
3-Dec
12-Dec
Yellow-rumped Warbler
****!
2-Sep
26-Sep
17-Oct
29-Oct
8-Nov
Marsh Wren
*
19-Aug
27-Sep
30-Oct
21-Nov
-
Golden-crowned Sparrow
***
12-Sep
27-Sep
21-Oct
30-Oct
7-Nov
Northern Flicker
***
6-Sep
27-Sep
20-Oct
5-Nov
20-Nov
Western Meadowlark
**
10-Sep
27-Sep
22-Oct
8-Nov
6-Dec
Varied Thrush
**
14-Sep
29-Sep
After Dec 31
-
-
Eared Grebe
***
30-Aug
29-Sep
9-Nov
29-Nov
11-Dec
Chestnut-collared Longspur
*
17-Sep
3-Oct
25-Oct
12-Nov
30-Nov
Golden-crowned Kinglet
**
14-Sep
3-Oct
26-Oct
11-Nov
21-Nov
Ruby-crowned Kinglet
***
15-Sep
3-Oct
16-Dec
-
-
White-throated Sparrow
**
17-Sep
3-Oct
25-Oct
-
-
Cackling Goose
**
18-Sep
5-Oct
22-Nov
7-Dec
19-Dec
Hermit Thrush
***
21-Sep
5-Oct
28-Oct
7-Nov
15-Nov
Dark-eyed Junco
***
21-Sep
9-Oct
16-Dec
After Dec 31
-
Dunlin
**
22-Sep
11-Oct
6-Nov
24-Nov
8-Dec
American Coot
***
5-Sep
13-Oct
17-Nov
5-Dec
-
Ruddy Duck
***
19-Sep
13-Oct
14-Nov
-
-
Harris's Sparrow
*
18-Sep
14-Oct
After Dec 31
-
-
Northern Shrike
*
30-Sep
14-Oct
13-Dec
-
-
Swamp Sparrow
*
29-Sep
14-Oct
17-Dec
-
-
Western Grebe
***
15-Sep
14-Oct
5-Nov
24-Nov
9-Dec
Beginning Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Red-breasted Nuthatch
*
29-Jul
10-Aug
2-Sep
28-Oct
14-Nov
Chipping Sparrow
**
7-Aug
20-Aug
8-Sep
11-Oct
5-Nov
Black Turnstone
*
3-Jul
19-Jul
14-Sep
26-Nov
7-Dec
Common Yellowthroat
***
17-Aug
29-Aug
16-Sep
9-Oct
28-Oct
Pectoral Sandpiper
**
17-Aug
1-Sep
20-Sep
11-Oct
28-Oct
Mountain Bluebird
*
6-Sep
12-Sep
22-Sep
15-Oct
29-Oct
Orange-crowned Warbler
***
12-Aug
2-Sep
22-Sep
12-Oct
29-Oct
Savannah Sparrow
**
13-Aug
29-Aug
27-Sep
21-Oct
9-Nov
Blue-winged Teal
*
6-Aug
21-Aug
28-Sep
24-Oct
8-Nov
Brewer's Blackbird
**
23-Aug
8-Sep
28-Sep
16-Oct
10-Nov
Black-throated Gray Warbler
**
30-Jul
13-Aug
30-Sep
22-Oct
4-Nov
Townsend's Warbler
**
12-Aug
30-Aug
30-Sep
27-Oct
10-Nov
Cooper's Hawk
*
1-Aug
7-Sep
1-Oct
2-Nov
19-Nov
Red-shouldered Hawk
*
19-Aug
6-Sep
3-Oct
23-Oct
-
Lincoln's Sparrow
**
30-Aug
13-Sep
5-Oct
22-Oct
8-Nov
Red-naped Sapsucker
*
8-Sep
22-Sep
9-Oct
24-Oct
4-Nov
Red-winged Blackbird
**
24-Aug
11-Sep
10-Oct
31-Oct
21-Nov
White-crowned Sparrow
***
4-Sep
20-Sep
14-Oct
26-Oct
6-Nov
Ending Departures
Species
Noticeability
Migrants Begin Arriving
Rapid Migrant Influx
Peak
Rapid Migrant Departure
Last Migrants Depart
Violet-green Swallow
**
-
-
Before July 1
26-Jul
15-Oct
Lucy's Warbler
*
-
-
Before July 1
27-Jul
16-Oct
Hermit Warbler
*
28-Jul
6-Aug
22-Aug
7-Sep
26-Oct
Ruddy Turnstone
*
Before July 1
13-Jul
21-Aug
8-Sep
5-Dec
Greater Yellowlegs
*
Before July 1
10-Jul
30-Aug
14-Sep
11-Dec
Lesser Yellowlegs
*
Before July 1
9-Aug
26-Aug
14-Sep
20-Oct
Blue Grosbeak
**
Before July 1
1-Jul
31-Jul
16-Sep
12-Oct
Osprey
**
4-Aug
14-Aug
26-Aug
16-Sep
18-Oct
Lazuli Bunting
**
5-Aug
11-Aug
20-Aug
17-Sep
10-Oct
Green Heron
*
-
Before July 1
30-Aug
23-Sep
18-Oct
Nashville Warbler
**
2-Aug
16-Aug
4-Sep
23-Sep
12-Oct
Sage Thrasher
*
-
-
29-Aug
24-Sep
20-Oct
Swainson's Thrush
**
19-Aug
26-Aug
8-Sep
24-Sep
10-Oct
Wandering Tattler
*
Before July 1
20-Jul
24-Aug
24-Sep
16-Oct
Yellow-headed Blackbird
**
12-Aug
21-Aug
2-Sep
24-Sep
11-Oct
Barn Swallow
***
-
Before July 1
23-Aug
25-Sep
12-Oct
White-faced Ibis
**
Before July 1
4-Jul
26-Aug
25-Sep
16-Oct
American White Pelican
*
Before July 1
17-Aug
1-Sep
26-Sep
11-Dec
Bell's Vireo
*
-
Before July 1
28-Jul
26-Sep
12-Oct
Western Wood-Pewee
***
-
-
7-Aug
26-Sep
12-Oct
Swainson's Hawk
**
-
26-Jul
14-Aug
27-Sep
13-Oct
American Avocet
*
-
Before July 1
31-Aug
28-Sep
20-Oct
Cinnamon Teal
*
31-Jul
16-Aug
5-Sep
28-Sep
14-Oct
Brewer's Sparrow
**
6-Aug
21-Aug
8-Sep
28-Sep
11-Oct
Western Tanager
***
15-Aug
25-Aug
7-Sep
28-Sep
12-Oct
Wilson's Warbler
***
8-Aug
22-Aug
8-Sep
28-Sep
12-Oct
House Wren
**
14-Aug
24-Aug
9-Sep
29-Sep
8-Nov
Warbling Vireo
***
14-Aug
25-Aug
9-Sep
29-Sep
13-Oct
Arctic Tern
*
18-Jul
8-Aug
5-Sep
30-Sep
17-Oct
Blue-gray Gnatcatcher
*
9-Aug
24-Aug
12-Sep
30-Sep
13-Oct
Killdeer
**
4-Aug
19-Aug
8-Sep
30-Sep
20-Nov
Green-tailed Towhee
**
21-Aug
1-Sep
14-Sep
1-Oct
12-Oct
Common Tern
*
19-Aug
1-Sep
16-Sep
3-Oct
16-Oct
Franklin's Gull
*
Before July 1
1-Jul
3-Sep
3-Oct
1-Nov
Summer Tanager
*
-
-
27-Jul
3-Oct
15-Oct
Vesper Sparrow
**
17-Aug
30-Aug
15-Sep
3-Oct
17-Oct
Yellow Warbler
***
5-Aug
19-Aug
8-Sep
3-Oct
21-Oct
Pacific-slope Flycatcher
***
19-Aug
28-Aug
12-Sep
4-Oct
20-Oct
Elegant Tern
*
Before July 1
21-Jul
15-Sep
5-Oct
26-Nov
Clay-colored Sparrow
*
14-Aug
28-Aug
17-Sep
6-Oct
2-Nov
Sabine's Gull
**
15-Aug
4-Sep
21-Sep
6-Oct
17-Oct
Turkey Vulture
***
23-Aug
3-Sep
14-Sep
6-Oct
19-Oct
Heermann's Gull
*
-
Before July 1
16-Sep
7-Oct
1-Dec
Vaux's Swift
***
26-Aug
5-Sep
16-Sep
7-Oct
21-Oct
Common Yellowthroat
***
17-Aug
29-Aug
16-Sep
9-Oct
28-Oct
Chipping Sparrow
***
7-Aug
20-Aug
8-Sep
11-Oct
5-Nov
Pectoral Sandpiper
**
17-Aug
1-Sep
20-Sep
11-Oct
28-Oct
Orange-crowned Warbler
***
12-Aug
2-Sep
22-Sep
12-Oct
29-Oct
Mountain Bluebird
*
6-Sep
12-Sep
22-Sep
15-Oct
29-Oct
Brewer's Blackbird
**
23-Aug
8-Sep
28-Sep
16-Oct
10-Nov
–––––––––––––––––––––––––––––––––––
Farnsworth and Van Doren
