An air-filled sac within the birds' lungs is believed to increase the force the birds use to power flight muscles while soaring. Soaring birds -- like osprey, eagles, falcons, even vultures -- can ...
Of all the marvels of the natural world, few are as astonishing as the common swift (Apus apus). These small birds spend ...
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All About Bird Wings and Flight Feathers
The Wright Brothers studied bird flight before they designed the first airplane. Now modern aircraft fly higher and faster than any bird, yet no manufactured device matches the graceful movements and ...
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