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Marginal conditions that begin the period in the West become more favorable for increasingly widespread light to moderate movements over the course of the forecast period, while the East experiences several bouts of favorable winds and warming temperatures the kickstart…

In our first weekly forecast for spring 2014, BirdCast highlighted the potential for fallouts and concentration of migrants in the Florida peninsula:

“By midweek conditions favorable for migrant arrivals and departures are limited to Florida North to the Carolinas; and birders…

In this new weekly (or almost weekly) feature Team BirdCast will be highlighting particular species that are departing, arriving, or just plain moving in very obvious (or not!) ways.

Warbling Vireo: the eBird map below shows the most recent reports of…

Light to moderate movements begin across the country this week, punctuated with some heavier movements in the Great Plains, in particular, as large numbers of waterbirds depart their winter haunts. Species on the move this week will include Turkey Vulture,…

In the past decades birders have become increasingly aware of rapid changes in the phenology of bird movements in parts of the United States, noting what species are early, when birds are late. The power of eBird for highlighting these…

Purple Gallinules are well known as champions of long-distance vagrancy, with records from as far north as Iceland, as far south as South Georgia Island, as far west as the Galapagos Islands, and as far east as Italy and South…

Late last week Teams BirdCast and eBird posted a story about some recent winter movements. Here, we decided to look a bit more closely at what seemed to be some rather drastic departures this winter in the patterns of distributions…

Winter is not necessarily a season of the year that we associate with bird migration. This is for good reason, as the epic movements of spring and fall are not usually underway and nowhere do we find the diversity in…

Diminishing returns aside (no pun intended), the West saw local light to moderate movements continue as the East saw a last large pulse of moderate to heavy movements. Birds on the move this week included Lesser Scaup, Bufflehead, Red-breasted and…

Scattered light movements will occur in portions of the West, as the East sees a substantial movement to begin and end the period. Birds on the move this week will include Bufflehead, Common Goldeneye, Hooded Merganser, Ruby-crowned Kinglet, Gray Catbird,…

Scattered light movements were the norm in the West, with only a few areas of more intense movements, as the East experienced some substantially heavier migration than expected, particularly along the East Coast. Birds on the move this week included…

Light to moderate movements are the norm across the country this week as species diversity and numbers pass peak in many areas, although some locally heavy movements begin the period in the Southeast. Birds on the move this week include…