Birds:Characteristics, Behavior, Diet

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birds
By KV
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Characteristics

• Birds have feathers, wings, lay eggs and are warm
  blooded.
• There are around 10,000 different species of
  birds worldwide.
• Scientists believe that birds evolved from
  theropod dinosaurs.

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Characteristics

• Bird bones are not solid, like human bones,
  instead, most birds have hollow bones.
• Even though hollow, birds bones are very dense.
• Birds have a backbone. They are vertebrates.

Keel
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Characteristics

• Birds beaks are adapted to the food they eat.
• All birds are warm-blooded. They can regulate
  their body temperature.
• Birds have wings, but not all birds use them to
  fly.
• Female birds lay eggs.
• The Ostrich is the largest bird in the world.

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Other facts

• Some bird species are intelligent enough to
  create and use tools.
• The chicken is the most common species of bird
  found in the world.
• Around 20 of bird species migrate long distances
  every year.
• Hummingbirds can fly backwards.

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Diet

• In the wild, birds eat a vast variety of foods
• seeds, nuts, grasses, flowers, fruits, insects,
  meat, fish, etc.