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We see and hear birds every day. This is because they are found in many different places. Some birds live out at sea, while others are found only in the forest. A few even live near people in towns and villages. Except for insects and bats, birds are the only animals that can fly. This is one reason why birds are found nearly everywhere on Earth, even on the smallest islands of the Pacific Ocean. Birds are different from all other animals because they have feathers. Feathers are light but very strong and there are two main types. The feathers found on the wings and tail are flight feathers. Birds also have smaller down feathers, which keep them warm. Just like us, birds are warm-blooded. They need to keep their body temperature above 37°C. |
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