Squirrel harassing bats

I was walking through the drizzly woods, enjoying fresh bilberries, Molly scouting ahead. A squirrel ran up an old oak, and while Molly gazed upwards, front paws on the trunk, a second squirrel sneaked up the far side and into a hole half way up the tree. A couple of minutes later its head popped out to check the coast was clear and it carried on to the top.

Seconds later out swooped 1, 2, 3, 4, then 5 bats in quick succession. Then 6, 7, 8 and 9 ….10 ……. 11 and 12. After a long pause out came number 13, a few minutes later number 14 and much later came number 15. These were large looking bats. None of your frantic flapping of the wings or jumpy zig zag flight. More of a glide and a swoosh. All went the same direction and none returned in the 20 minutes I watched.

I wonder what went on inside. Did the squirrel attack the bats? Did the bats mob the squirrel? Why were some of the bats so slow to leave the roost? I’ll never know, but it was a great encounter.

A friend suggests the bats were probably Noctules.