Birds
⭐ MasteredBirds have feathers, wings and beaks, and they lay eggs. Not all birds can fly: penguins swim and ostriches run.
Hummingbirds can fly backwards.
All about Birds
Birds are warm-blooded animals with feathers, wings and beaks. They lay eggs with hard shells and usually care for their chicks. Birds range in size from the tiny bee hummingbird to the huge ostrich.
Most birds can fly, but some, like penguins, have wings that work as flippers underwater. Others, like ostriches, are too heavy to fly but run very fast. Birds have hollow bones that help them stay light.
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Real-life uses of Birds
- Spreading seeds and pollen across landscapes
- Helping farmers control insect pests
- Acting as early warnings of environmental change
Frequently asked questions about Birds
Why do birds sing?
Birds sing to attract mates, mark territory and warn others of danger.
How do birds keep warm?
Their feathers trap air, which keeps body heat in, and some birds fluff them up in cold weather.
Do birds have teeth?
No. Birds have beaks with no teeth, and they swallow food whole or grind it in a gizzard.