On the Wing: Insects, Pterosaurs, Birds, Bats and the Evolution of Animal Flight A near fine hardcover in

A near fine hardcover in dust jacket

Includes information about the Sierra Nevada area

Timaliidae

Lockley combines a mass of information with stories of his own experiences while watching petrels around the world

Compiled by Workers of the Writer's Program of the Work Projects Administration in the State of Florida

On the Wing: Insects, Pterosaurs, Birds, Bats and the Evolution of Animal Flight A near fine hardcover inAlexander guides readers through the anomalies of the flying world: hovering hummingbirds, unexpected gliders [squirrels, for instance], and the flyers that went extinct [pterosaurs]. Alexander also delves into wing origin theory and explores whether birds entered the skies from the trees down [as gliders] or from the ground up [as runners] and uses the latest fossil evidence to present readers with an answer.