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Continental Summary: Moderate movements took hold in many areas of the West, while a strong front produced excellent end of the period flights in the East after a pervasive summer-like air mass departed. Birds on the move included Barn Swallow,…

A generally quiet week in the West featured isolated light and moderate flights of Greater White-fronted Goose, Northern Pintail, Bufflehead, Common Goldeneye, Western Bluebird, and Yellow-rumped Warbler, while moderate flights of Red-breasted Merganser, White-winged Scoter, Franklin’s Gull, American Robin, Savannah Sparrow, and American Tree Sparrow graced the East early and late in the period.

Continental Summary In light to moderate migration Mountain Bluebird, Hooded Oriole, Barn Swallow, and Lucy’s Warbler were on the move last weekend in the West, while Wood Duck, Killdeer, American Woodcock, and Northern Parula composed mid to late week flights in the East….

BirdCast regional analyses return after our global big day absence! Widespread light and moderate to locally heavy flights characterized the first days of this long forecast period in the West and featured Willow Flycatcher, Dusky Flycatcher, Western Wood-Pewee, Swainson’s Thrush, MacGillivray’s Warbler, Yellow Warbler, and Black-headed Grosbeak, while moderate to very heavy flights occurred in the latter two thirds of the two-week period in the East, first in the Plains and then farther to the coasts, featuring Alder Flycatcher, Yellow-bellied Flycatcher, Philadelphia Vireo, Bay-breasted Warbler, Magnolia Warbler, Canada Warbler, and Wilson’s Warbler.

Continental Summary Light to moderate movements were widespread across the West this week, while . Species on the move this week included American Wigeon, Broad-winged Hawk, Black-billed Cuckoo, Pacific-slope Flycatcher, Eastern Wood-Pewee, Red-eyed Vireo, Ruby-crowned Kinglet, American Redstart, Blackpoll, Tennessee,…

Continental Summary: Migration arrivals continued across portion of the West, while the floodgates began to open in many areas of the East. The 5-12 April 2013 animation shows the week’s movements relative to synoptic weather conditions. West Light to moderate movements…

A big week for migration saw Ruby-crowned Kinglet, Orange-crowned Warbler, Yellow-rumped Warbler, Green-tailed Towhee, White-crowned Sparrow, and Golden-crowned Sparrow migrate in light to moderate flights across the West and Blue-winged Teal, Bald Eagle, Swainson’s Thrush, Ruby-crowned Kinglet, Nashville Warbler, Orange-crowned Warbler, Yellow-rumped Warbler, Magnolia Warbler, Palm Warbler, Blackpoll Warbler, Bay-breasted Warbler, and Baltimore Oriole moving in moderate to heavy flights in the East.

Continental Summary: Pulses of light to moderate movements continued in the West, as a large movement in the East saw large numbers of birds moving across the region and transiting through and to the Southeast. Birds on the move this…

Movements in the West were local and light, primarily along the Pacific Coast, featuring Tundra Swan, Common Goldeneye, Bufflehead, Bonaparte’s Gull, Golden-crowned Kinglet, Bohemian Waxwing, and Purple Finch, while in the East pulses of sub-regional movements were moderate to locally heavy and featured Greater Scaup, Bufflehead, Hooded Merganser, Red-throated Loon, Horned Grebe, American Robin, American Tree Sparrow, Pine Siskin, and Purple Finch.

Continental: Light to moderate movements across much of the West exemplified more of the steady push of birds into the region, while the East received a jolt of birds midweek, including some movements into the Northeast after many days with…

Conditions in the West were more unfavorable than favorable this week, with only light movements early in the weekend and late in the work week, while localized light to moderate movements in the Great Plains and Texas and parts of the southeast were there highlights of migration in the East.

Continental Summary A nice pulse of moderate movements early to midweek in the West contrasted a pattern of late week moderate to locally heavy movements in the East. Species on the move this week included Hooded Merganser, Horned and Red-necked…