According to bird experts Kenn and Kimberly Kaufman, much about bird flying is dependent on the species, season, and what else the bird is doing. Songbirds that feed on insects vary in the elevation ...

The biggest flying bird that ever lived had double the wingspan of today's biggest flying bird, the royal albatross. The royal albatross, with a wingspan of 3.5 metres, is a mere pigeon compared to an ...