the.com/bird

A dinosaur that gave up teeth and took the sky instead.

means A warm-blooded, feathered, egg-laying animal with a beak and wings, most of which can fly.

from Bird comes from Old English 'bridd,' which oddly enough originally meant specifically a young bird or nestling — the general word for any adult bird in Old English was actually 'fugol' (ancestor of 'fowl'). Over time 'bridd' pushed 'fugol' aside and widened its meaning to cover birds of all ages. Where 'bridd' itself comes from before that is unclear — it has no obvious ancestor in other Germanic languages, which makes its deeper origin something of a mystery.

living dinosaurs
Birds are technically theropod dinosaurs that survived.
hollow bones
Lightweight skeleton, not weak, built for flight efficiency.
hummingbird heart
Can beat over 1,200 times per minute.
no bladder
Birds pee and poop as one white-and-black package.
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