Pelican in flight with palm trees in the background; United States of America

Pelican in flight with palm trees in the background; United States of America

An eagle

A man paragliding with an Egyptian vulture (Neophron percnopterus)

Great egret in flight

Steller's sea eagle flying over sea

A brown pelican (Pelecanus occidentalis) flying low above the white sand beach with the blue water, Caribbean in the summer; Varadero, Cuba

Science & Medicine - line art (Scientific) Aeronautics - Aerial Machines Mechanical Bird

Flora & Fauna - line art - a 19th century engraving Animal - mammal - the class Aves Bird Swallow A small bird, noted for its speed and its ability to stay in the air for long periods to capture insects. Certain species are migratory.

Flora & Fauna - (Color) - a 19th century, hand-colored engraving Animal - mammal - the class Aves Bird C. Ferus Wild Swan A migratory waterfowl that swims and flies more gracefully and faster than any other. Young swans are called cygnets after the genu

Flora & Fauna - line art - a 19th century engraving Animal - mammal - the class Aves Bird Swan A migratory waterfowl that swims and flies more gracefully and faster than any other. Young swans are called cygnets after the genus "cygnus", in which swan

Artist's concept of the X-33 after engine shutdown.

Para glider in flight