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Mid to late period conditions will be favorable for scattered light to moderate pulses of movements featuring American Wigeon, Cooper’s Hawk, Golden Eagle, American Coot, Snowy Owl, and Red-winged Blackbird in the West, while a strong frontal passage early in the weekend brings moderate to heavy flights of Mallard, Snow Goose, Hooded Merganser, Common Merganser, Purple Sandpiper, Bonaparte’s Gull, and American Robin to the East.

IMPORTANT NOTE: Team Birdcast is focusing on preparing for tomorrow’s Global Big Day, and as a result we haven’t been able to write a thorough forecast and analysis by our usual Friday deadline. Here is an abbreviated forecast, with weather…

Continental Summary Weekend birders can look forward to widespread light to moderate movements across the West, while Monday through Wednesday brings similarly widespread light to moderate flights in the East. Species on the move this week will include Blue-winged Teal, Turkey…

Continental Summary Pulses of more provincial movements that begin the weekend contrast the widespread movements that will end the period in the West, while the opposite pattern of movements occurs in the East. Species on the move this week will…

Continental: Continued light to moderate movements are again the norm for the West away from areas of precipitation, as the East waits to experience moderate to heavy movements in many areas until the middle of the week. Birds on the…

Continental Summary: The West sees continued light to moderate movements and new arrivals in the deserts and California, while pulses of moderate and heavy movements of new trans-Gulf and circum-Gulf arrivals appear among strong passing storms. On the move this…

A week featuring Turkey Vulture, Pacific-slope Flycatcher, Common Yellowthroat, Green-tailed Towhee, and Vesper Sparrow in light to moderate movements to begin and end the period are in store for the West, while moderate to heavy flights featuring Ruby-throated Hummingbird, Acadian Flycatcher, Blue-headed Vireo, Philadelphia Vireo, Gray Catbird, Brown Thrasher, Tennessee Warbler, Bay-breasted Warbler, American Redstart, Summer Tanager, and Baltimore Oriole begin and end the period in the East.

Continental Summary: Widespread light and moderate movements across the West are still apparent, as a major pulse of northerly flow brings a large flight to the East by midweek. Birds on the move this week will include Northern Harrier, Chimney…

Scattered light movements will be the norm for this late season period with higher intensities and extents to end the week that will feature Tundra Swan, Green-winged Teal, Gadwall, Lesser Scaup, Pied-billed Grebe, Eared Grebe, Say’s Phoebe, and American Pipit, while the East sees a significant early and late period push of moderate to locally heavy movements featuring Redhead, Lesser Scaup, Common Loon, Horned Grebe, Bonaparte’s Gull, Hermit Thrush, and Field Sparrow.

Continental Summary Scattered light to moderate movements that begin the weekend give way to much more widespread movements to end the period in the West, while moderate to heavy movements will occur in many areas of the East as low…

Continental Summary Light to moderate movements occur early in the forecast period across the West before unfavorable conditions arrive for the remainder of the week, while two pulses of moderate to heavy movements follow passing frontal boundaries in the East. Species…

Primarily unfavorable migration conditions in the West, coupled with the late date in the fall migration season, will allow for only local light movements featuring Northern Pintail, Green-winged Teal, Redhead, Pied-billed Grebe, Eared Grebe, Sandhill Crane, Say’s Phoebe, Varied Thrush, and American Pipit, while several pulses of energy moving through the East will bring favorable migration conditions that feature moderate to locally heavy movements of Gadwall, Lesser Scaup, Bufflehead, Tundra Swan, Common Loon, American Bittern, Bonaparte’s Gull, American Kestrel, and Hermit Thrush.