This video from the USA says about itself:
World’s largest bat colony – over 40 million bats – BBC wildlife
Enter the deep toxic bat caves of Texas USA and take a closer look at the breeding skills and survival instincts of bat young.
Soesterberg in Utrecht province in the Netherlands used to be an air force base.
Now, it is reconstructed as a nature reserve.
Bats winter there. Mostly Daubenton’s bats, but also Natterer’s bats and greater long-eared bats.
Bat ‘Super Immunity’ To Lethal Diseases Could Help Protect People: here. And here.
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