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Author Topic: Why can bats find their way out of a house, and birds can't?  (Read 1614 times)

Offline CliffordK

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I don't have screens on all of my windows.  Last night I heard a fluttering in the house and noticed a bat flying in circles.  I started thinking that I didn't want to try to catch it or chase it out of the house, but a few minutes later it disappeared.

Birds, on the other hand seem to become trapped in a house, and have to be caught or chased out.

What is the difference?

Are the bats just smarter than the birds?

Or is a closed window opaque to a bat, and transparent to a bird, whereas an open window is so much different when viewed by echolocation?


Offline JP

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Closed windows should be fairly visible to a bat's sonar, since they're designed to be transparent to light, not to sound.  (The fact that you can close a window to muffle outdoor sounds demonstrates this, whereas closing a window doesn't really block much light. 

Offline alancalverd

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Depends on the bird, and how it got into the house. I have swallows nesting in my workshop, and they come and go through quite a small vent, but sparrows that enter by chance through the door or window don't know where to look for the exit if their entrance gets closed.

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