Скачать или смотреть Animals That Fly (1961)

The content discusses the anatomy and flight mechanics of three main groups of flying animals: insects, birds, and bats. Flying insects, such as flies, butterflies, and dragonflies, have thin, membranous wings that they move by altering their body shape. Birds possess strong wings made of bone and muscle, covered with overlapping feathers, and they use powerful muscles to flap their wings. Bats, which are small and furry, have wings similar to human hands, consisting of skin stretched over elongated bones. All three groups are uniquely adapted for flight, with insects being the most numerous, followed by birds, and then bats.

Keywords
flying insects, birds, bats, wing anatomy, flight mechanics, butterflies, dragonflies, feathers, muscle movement, insect wings

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