Post date: 15-Jun-2013 08:16:12
I've now added in the 2013 data into the presence estimate models (jump to them here). They show a significant increase in the relative abundance of the Barbastelle bats, which now are appearing at 5 times the rate you would expect to see. Sadly, the Pipistrelle population seems to have been hit very hard. The "hit rate" for recordings has nearly halved, and all the bat roost counts from the local house roosts I track as part of the project have halved on the first count. Another big change is the presence of Bechstein bats in the forest this year, small numbers but clear clusters of calls in a few places.