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Perching birds like crow, sparrow and mynahs, have four toes-three in front and one at the back. Their toes help them to hold the branch of a tree very firmly. This act is called perching. Do you know why birds can sleep on the branch of tree at night without falling?

Perching helps the birds to sleep at night without falling. This is because the toes continue to grip the branches firmly even when the bird is asleep.

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15y ago

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