This animation from Cornell Lab of Ornithology tracks 118 migrating bird species along their journeys across the Americas, using citizen science. http://ow.ly/wSev303QfZB | National Audubon Society

Explore the hidden lives of familiar birds with Wild Birds Revealed, a new video series by the Cornell Lab of Ornithology. From the elusive puffin, to the aerial master, the Tree Swallow, to the unrivaled fisher of the skies, the Osprey—each episode gives you rare access to the hidden lives of familiar birds, filmed by acclaimed wildlife photographers Tim and Russell Laman. 🌊 Dive underwater with puffins in Episode 2 | Cornell Lab of Ornithology