News

Most of the last big pushes of spring migration will occur this week. Light to moderate movements will occur in many precipitation-free areas of the West. The Great Plains will experience moderate to heavy movements in many areas early in…

Watch for a good migration of birds up through the Great Plains on Saturday night (25 Feb 2012) and Sunday (26 Feb 2012). As the weakening storm moves eastward, we can probably expect some bird movement through the Great Lakes and…

We expect the pace of record-early spring arrivals from throughout the eastern two-thirds of the country to slow significantly this week. While a few birds may continue to push north, don’t expect the massive movements of birds from the last…

Areas of the western US lacking precipitation should experience widespread light to moderate migration early in the forecast period, but an increasing threat of precipitation later in the week may shut down movements in many places. The Great Plains begin…

While team eBird is in Alaska, our April eBirder of the month, Benjamin Van Doren, is our guest BirdCaster. Benjamin has a talent for understanding migration, developing an ambitious project to gather morning flight data from dozens birdwatchers in the…

Expect another week of record early arrivals and large numbers of migrants across much of the continent. Mild conditions will dominate away from the far west where unsettled weather will continue. A large high pressure system will once again become…

Expect the best migration so far this year for at least portions of this week throughout North America. Many areas of the country will see fallout potential this week for passerines and waterbirds. The Desert Southwest and scattered areas of…

High pressure will dominate much of the country during this forecast period. The West will experience widespread light to moderate migration this week, as high pressure and warmer temperatures build in across most of the region. Moderate to heavy movements…

BirdCast reports on many aspects of bird migration, and sadly one scenario we encounter is mass mortality during migration. For example sometimes birds are downed when migrating over water, only to be found in the stomachs of tiger sharks; other…

BirdCast presented at the annual Migration Celebration at the Cornell Lab of Ornithology on September 13. Celebrating the spectacle of bird migration, visitors could learn how to use BirdCast’s Migration Tools, participate in the BirdCast quiz bowl, and learn more about how to stop bird collisions at the table of the Bird Collision Prevention Alliance, a new partnership that BirdCast participates in.

During the past week, enormous numbers of birds have been migrating through the US. But birders seeking massive concentrations of birds in their favorite habitats may not have experienced the fallouts of their dreams. A new visualization depicting the altitude of migration, when viewed in conjunction with the distribution of migration traffic, highlights an explanation.

During the past week, enormous numbers of birds have been migrating through the US. A review of our live migration maps, in particular the night of 14-15 May, confirm several nights well above 400 million birds aloft!