Page 102 - The Miracle of Migration in Animals

THE MIRACLE OF MIGRATION IN ANIMALS

Some bats travel great distances to find suitable caves where they
can spend the winter.

bat’s ears. A bat can understand how far away an object is, as well as
its size, by the echo delay from the original sound and its frequency.
For example, a bat can detect a 20 millimeter (4/5 inch) diameter
sphere at five meters (16 feet) or a large rock face at 50 meters (165
feet). Bats can hunt at night and in overcast conditions, but this does
not explain what helps them to find their way over long migratory
distances. 32
As far as we understand, a bat has inadequate eyesight, but a
special system to perceive objects some meters away, make an analy-
sis, and draw conclusions from this data. Bats also know the best
places to feed and how to get to these regions. But the important
question is, how do they know all these things? As is the case with all
other creatures, research remains inconclusive on this point. The way
animals make certain decisions for certain reasons, and their being
fully equipped to implement these decisions cannot be explained by
chance or other evolutionary logic. Any creature’s perfect system is

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