The massive annual spring migration of America's birds – millions of them – is underway. Here's how to follow along at home.

While you slept one night this week, an estimated 6.3 million migratory birds flew over Colorado at an average speed of 13 mph and an average altitude of 3,600 feet. And of those, 1.75 million of t… ...

BirdCast has live, local bird migration alerts so you can see who's flying through your area at any time. Right now, numbers are low in Rhode Island as we are well away from the peak.

Altitudinal migrants: These are birds who change altitude, not location, ... Live spring bird migration map on April 24, 2025, for birds migrating in the contiguous United States.

Spring bird migration is underway. Here's when and what you can expect to see in RI On peak migration days, as many as 500 million birds could be flying under cover of darkness across America.

Peak migration is defined by the seasonal window during which about 50% of nocturnal bird migration traffic passes through an area. On a map you can see a wave of peak migration move up from the ...

While the new study doesn’t solve the riddle of high-altitude migration, that one out of eight grey plovers got picked off by a predator shows that, even 10,000 feet up, the sky is a dangerous ...

While you slept one night this week, an estimated 6.3 million migratory birds flew over Colorado at an average speed of 13 mph and an average altitude of 3,600 feet. And of those, 1.75 million of t… ...

“Birds do some amazing things,” says NH Audubon raptor biologist Chris Martin, co-host of Something Wild, “and migration is at the top of that list.” ...

Using radar has allowed researchers to examine migration altitude, speed, and wing beat frequency of birds, ... Radar observations of bird migration over the Great Lakes. The Auk 120, 278-290 (2003).

Extreme differences in flight altitude between day and night may have been an undetected pattern amongst migratory birds -- until now. The observation was made by researchers at Lund University in ...

BirdCast has live, local bird migration alerts so you can see who's flying through your area at any time. On March 20, an estimated 2,500 birds flew over the Seacoast, according to Birdcast.