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BirdCast Migration Forecast, 21-28 April

By eBird Northwest Team April 21, 2017
MacGillivray's Warbler 6585

MacGillivray's Warbler (c) Jim Livaudais 2017

It’s BirdCast time! Do you ever wonder what migrant birds will be arriving soon in your local birding spots? BirdCast’s weekly migration forecasts keep you up to date with what’s on deck for migration. The BirdCast forecasts highlight migrant species that you can expect to see in each of the regions covered: Upper Midwest and Northeast; Gulf Coast and Southeast; Great Plains; and West. All of these forecasts are generated with your eBird data, and wouldn’t be possible without eBirders like you! Although these forecasts are currently just for the continental US, as we get more sightings from the rest of the world we’ll be able to bring BirdCast to more parts of the world—here’s Barn Swallow progression in southeastern Asia. Read more to see what’s happening across the US in the coming days.

BirdCast Continental Summary for 21-28 April 2017

The West will see light to moderate flights, particularly in the Desert Southwest late in the weekend and late in the work week, featuring Spotted Sandpiper, Long-billed Dowitcher, Swainson’s Thrush, Townsend’s Warbler, MacGillivray’s Warbler, Black-headed Grosbeak, and Western Tanager, while a pulse of highly favorable migration period late in the period in the East will bring moderate to very heavy flights featuring Red-headed Woodpecker, Acadian Flycatcher, Least Flycatcher, Swainson’s Thrush, Chestnut-sided Warbler, Bay-breasted Warbler, Northern Parula, and Mourning Warbler. Early period brings a dynamic and complex atmosphere will potential for Gulf Coast concentrations, where late period brings a major incursion of Neotropical migrants across and around the Gulf of Mexico, as favorable flight conditions arrive in Mexico and northern Central America at the peak of the season.

Regional Forecasts

Upper Midwest and Northeast

Gulf Coast and Southeast

Great Plains