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Originally Posted by FGFan
Really quite interesting, the radar and the reason why they spiral.
For the record the radar pic came up for me on the first post.
Is this unusual or does it re-occur every year?
I have seen bats come out of caves before but never thought it could be read on radar.
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It happens here every so often if they all come out at roughly the same time.
Sometimes they trickle out and it does not show up. But this is a huge colony of bats. Much much larger than the one at Carlsbad. In fact in may be the largest in North America.