description About
Scientists believe that birds evolved from reptiles. Birds have backbones, and they lay eggs, but they’ve developed a unique feature that sets them apart from all other animals – feathers. Feathers are made of the same stuff human fingernails and hair are made from – a protein called keratin. Feathers, combined with lightweight bones, powerful wings and strong hearts let birds fly.
Info
- verified Status: Ended
- person By: Bill Nye
- calendar_month Release Date: 1995-10-13
- video_camera_front Companies Rabbit Ears Productions, KCTS Television
- tag Season: Season 3
- timer Episode Runtime: 26 Mins
- star Rating: 0 / 10
- visibilityViews: 3 views
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