A great aerodynamics experiment for kids! Why do birds migrate in the shape of a "v"? A great lesson on wind resistance!
BBC News - 'Unique' bird migration discovered--A tracking device which weighs less than a paperclip has helped scientists uncover what they say is one of the world's great
animated map of 118 different bird species migrating in broad unison, and patterns of 118 bird species in the Western Hemisphere (each dot represents a unique bird species), was created and by a team of scientists at the Cornell Lab of Ornithology.