HISTORICAL ARCHIVE

Adaptations of Birds

上映日期

1972-01-01

片长

10分钟

地区

美国

来源评分

0

历史票数

0

故事简介

Shows the adaptations of several birds which enable them to obtain food, fly, swim, and live efficiently in certain habitats. Examines the differences in bills adapted for spearing fish, breaking seeds, tearing prey, or chipping wood. Demonstrates the various toe arrangements adapted by perching, climbing, ground, swimming, and wading birds.