Green Guru: How High Do Migrating Birds Fly? By Susan CosierMarch 29, 2011 By Susan CosierMarch 29, 2011 Popular Stories Southern Giant Petrel The Surprising Gift From New Mexico’s Pueblos That Might Save the Rio Grande What The Last Ice Age Tells Us About Protecting Birds from Climate Change Now What Would a Screech-Owl Want With a Blind Snake? Day 314: Fraser’s Hill: A World Apart R Birds and Habitats are Under Attack With your help, we can fight back. We can protect birds and the places they call home — as long as people like you help. Donate Now One Voice, One World Climate change is the number one threat to birds. Sign our petition and raise your voice in a global call to action for birds and people. Sign the Petition Become an Audubon Member Membership benefits include one year of Audubon magazine and the latest news on birds and their habitats. Your support will help secure a future for birds at risk. Join Today Spread the word. It’s the least you can do.