Green Guru: How High Do Migrating Birds Fly? By Susan CosierMarch 29, 2011 By Susan CosierMarch 29, 2011 Popular Stories Glamour Shots of the World’s Cockiest Supermodels Carl Safina Makes A Case for Anthropomorphism Birds Are Taking Over the World, One GoPro at a Time What Made All of Seahorse Key’s Birds Jump Ship? Do Birds Grieve? R Support Bird Safe Buildings Building collisions kill millions of birds. A new bill would reduce deadly collisions at federal buildings. Take Action Watch Live Birds Follow the Atlantic Puffin family wherever you go. Watch the Birds You Can Make a Difference Save birds and their habitats with a donation to Audubon today. Donate to Save Birds Spread the word. It’s the least you can do.