I would guess it's due to the fact that not all bats live in low light
conditions (think: many species of fruit bats that spend their lives in trees).
Mammalian evolution takes longer than it does for invertebrates: the time
between generations is much longer.
Diana
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Interesting article and makes me wonder why bats have such good eyesight if it
is not used to capture insects (food). This article seems to show that bats
which use echo-location for finding food use it exclusively and if it is jammed
they do not get the food.
What purpose do the eyes
