28 brown long-eared bats emerging from a squirrel-hole. The film is edited to show the bats emerging in quick sequence, but the actual emergence took 44 minutes with gaps of up to seven minutes between individual bats. The reason you can't hear the bats is that they didn't echolocate as they left; I had an Anabat Walkabout within 2 m of the entrance and it didn't record a single call... So, the message here is that without the camera, the emergence would have been entirely undetected. | Bat Tree

Hairy legged vampire bat - Alchetron, the free social encyclopedia