Green Guru: How High Do Migrating Birds Fly? By Susan CosierMarch 29, 2011 By Susan CosierMarch 29, 2011 Popular Stories Hear the Many Different Hoots of the Barred Owl Listen to the Sweet, Soft Warble Common Ravens Sing to Their Partners Testing Out Song Sleuth, a New App That Identifies Birds by Their Calls Build a Nest Box to Welcome Spring Birds Birdist Rule #75: Get a Bird Tattoo, and Make It a Good One R “The views expressed in user comments do not reflect the views of Audubon. Audubon does not participate in political campaigns, nor do we support or oppose candidates.” 2017 Audubon Photography Awards This year's contest is now open! Submit your best bird photos by February 20th for the chance to win great prizes. Enter Now Join the Great Backyard Bird Count Spend fifteen minutes counting birds, February 17 through 20, and report your results online. Your observations make all the difference. Join the Count Protect the Birds and You Protect the Earth Birds and the places they call home are under attack, but with your help, we can fight back. Donate Now Spread the word. It’s the least you can do.