Green Guru: How High Do Migrating Birds Fly? By Susan CosierMarch 29, 2011 By Susan CosierMarch 29, 2011 Popular Stories Why Is This Northern Cardinal Yellow? How to Tell a Raven From a Crow Listen to the Sweet, Soft Warble Common Ravens Sing to Their Partners Who Wins the Feeder War? Thanks to Mom, a Photographer Finally Gets His Dream Shot 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.” Defend the Arctic Refuge Pledge to continue to oppose drilling in the Arctic National Wildlife Refuge, one of the wildest places left in America. Take the Pledge Endangered Species Act in Trouble Ask your members of Congress to oppose efforts to weaken the Endangered Species Act. Take Action Get Audubon in Your Inbox Let us send you the latest in bird and conservation news. Email address * Leave this field blank Spread the word. It’s the least you can do.