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The light to moderate movements featuring Common Loon, Double-crested Cormorant, Pacific-slope Flycatcher, Wilson’s Warbler, and Black-headed Grosbeak along the Pacific Coast and in the Desert Southwest highlighted the period’s migration in the West, while the East featured American White Pelican, Osprey, Least Sandpiper, Solitary Sandpiper, Chimney Swift, Northern Flicker, Eastern Kingbird, Barn Swallow, Chipping Sparrow scattered light to moderate flights, most consistent in the Gulf states.

Continental Summary
Light to moderate movements were the norm in the West and featured American Wigeon, Northern Pintail, Green-winged Teal, Wilson’s Warbler, Townsend’s Warbler, and Green-tailed Towhee, while moderate to locally heavy flights were common in the East and featured American…

Moderate to heavy movement from the Great Plains to the Gulf Coast in the early part of the period gave way to generally light movement across much of the country towards the end of the week. Species on the move…

Scattered light to moderate movements in the West stood in stark contrast to some massive movements in the East, particularly along the Atlantic Coast. Species on the move this week included Gadwall, Redhead, Lesser Scaup, Bufflehead, Red-breasted Merganser, American Coot, Wilson’s Snipe, Bonaparte’s…

Some light to moderate movements continued in the West, as the last of the moderate and locally heavy movements occurred in the East. Species on the move this week included Ruddy Turnstone, Yellow-billed Cuckoo, Yellow-bellied and Alder Flycatchers, and Gray-cheeked…

Scattered among the West’s areas of persistent precipitation during were light to moderate flights featuring Turkey Vulture, Greater Yellowlegs, Black-headed Grosbeak, and Hooded Oriole, while pulses of similarly intense flights featuring Great Egret, Eastern Kingbird, Barn Swallow, Brown Thrasher, Prothonotary Warbler, and Louisiana Waterthrush occurred in advance of multiple frontal passages in the East.

Light to moderate movements were widespread across the country this past week, with each of the BirdCast regions experiencing some nice pulses of birds. Of particular note was the higher than anticipated magnitude and intensity of movements early in the…

Widespread light to moderate movements dominated the first half of the forecast period in the West and featured Cackling Goose, Greater White-fronted Goose, Dunlin, Varied Thrush, Hermit Thrush, American Pipit, Yellow-rumped Warbler and Palm Warbler, Golden-crowned Sparrow, while pulses of moderate to very heavy flights graced the East and featured Pied-billed Grebe, Yellow-bellied Sapsucker, Ruby-crowned Kinglet, Golden-crowned Kinglet, Sprague’s Pipit, Orange-crowned Warbler, Rusty Blackbird, Brewer’s Blackbird, White-throated Sparrow, White-crowned Sparrow, and Dark-eyed Junco.

Light to moderate flights earlier in the period from the southern reaches of the West featured Tundra Swan, Canvasback, Bufflehead, Bonaparte’s Gull, American Tree Sparrow, and Pine Siskin, while moderate to heavy flights last weekend and late in the current week featured Bufflehead, Hooded Merganser, Common Loon, Great Cormorant, Golden-crowned Kinglet, Snow Bunting, Fox Sparrow, and White-throated Sparrow in the East.

Persistent light to moderate movements in the West and widespread moderate movements in the center of the continent highlighted the late season movements during this forecast period. Species on the move this week included White-rumped Sandpiper, Dunlin, Sanderling, Ruddy Turnstone,…

Wilson’s Warbler was on the move in portions of the West and Gulf Coast and Southeast this past week. This bird was photographed by Brian Sullivan.

Scattered light movements began the period, particularly in the California and portions of the Desert…

This period brought light to moderate flights that featured Western Sandpiper, Dunlin, Long-billed Dowitcher, Swainson’s Thrush, and Cedar Waxwing to the West, primarily in the middle of the week and scattered from California to the Rockies and north to Canada, while the East enjoyed moderate to locally heavy early and later week flights that featured Black Skimmer, Common Nighthawk, Black-billed Cuckoo, Yellow-billed Cuckoo, Swainson’s Thrush, Cedar Waxwing, and Dickcissel.