Checking Bat Boxes
Today I've been with the East Yorkshire Bat Group, checking bat boxes in Allerthorpe Woods. Six species have been recorded there in the past. Checking bat boxes The first few boxes we checked contained only spiders. Then we found boxes with bat droppings inside and finally one with two bats. They were Soprano pipistrelles, one male and one female. I'd assumed the sub-species of Pipistrelle could only be distinguished by the frequency of their echo-location calls, but apparently there are physical differences too. The Sopranos have yellow colouring around the mouth, a distinct pattern of veins in the wings and they smell different from Common pipistrelles. Soprano pipistrelle The boxes were clustered together in groups of pine trees, with two or three boxes on a single tree in some places. After checking a group, we realised we'd missed a box out, which was easily done. Going back to it was well worthwhile, because it contained nine Natterer's bats. They we