Cerulean Warbler

UCLA scientists drew data from records for 2.2 million migratory birds that had been captured and released between 1960 and 2019 as part of a United States Geological Survey tracking program. Pictured: A cerulean warbler.

UCLA scientists drew data from records for 2.2 million migratory birds that had been captured and released between 1960 and 2019 as part of a United States Geological Survey tracking program. Pictured: A cerulean warbler. Photo: Always a birder/Wikimedia Commons

UCLA scientists drew data from records for 2.2 million migratory birds that had been captured and released between 1960 and 2019 as part of a United States Geological Survey tracking program. Pictured: A cerulean warbler.

Sign In

We've recently sent you an authentication link. Please, check your inbox!

Sign in with a password below, or sign in using your email.

Get a code sent to your email to sign in, or sign in using a password.

Enter the code you received via email to sign in, or sign in using a password.

OR

By signing up, you agree to our Terms of Service.