- Birds need gravity to swallow.
- Duck can't walk without bobbing its head.
- Hummingbirds are the only bird that can fly backwards.
- Hummingbirds can't walk.
- Hummingbird's heart beats at over a 1,000 times a minute.
- Most birds eat twice their body weight each day.
- Ostrich's eye is bigger than its brain.
- Penguins are only found in the southern hemisphere primarily in Antarctica (excluding zoos above the equator).
- The bones of a pigeon weigh less than its feathers.
- The world's smallest bird is the 'bee hummingbird' found in Cuba.
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