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chappazhead | 04:46 Mon 23rd Oct 2006 | Animals & Nature
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why do bats only come out at night if their blind??
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Bats aren't blind - their eyes are perfectly good but they navigate and catch their prey in the dark by ultrasound or radar. They emit a high-pitched sound which reflects from an object and returns to their ears.
Vampire bats hunt mammals to feed on blood and they do at night when animals are sleeping. Fruit bats fly and feed during the day using heir sight.
Their staple diet only comes out at night too- moths, so that might have something to do with it.

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