"To Fly or Not to Fly," David Attenborough travels around the world to seek evidence for the evolution of flight. From the Galapagos Islands to New Zealand, species of birds that exist today model ...

Broad-winged hawk adult has rufous on breast, but no barring on primaries, only 1 or 2 tail bands, in flight shows more ... and shorter wings will help the identification process.

This bird made hawk-watching famous ... Dark morph: adult has an all-dark body with dark wing coverts and silvery flight feathers, the dark tail has a wide white band. The juvenile is dark ...