You can read more about autumn swarming here.2011-1 autumn swarming
One last try to see if we could pick up on some autumn swarming.
Last night some of the group trundled off to a local icehouse. Bob and Jonathan were dead tired having been out checking boxes all day. Chris Vine from the Cambridgeshire Bat Group brought his harp trap and we out up a single mist net. Pipistrelle activity was high all night. The wind fell and a Natterer’s soon went into the harp trap. Later in the evening a brown long eared bat, a pipistrelle and a Daubenton flew into the net
Daubenton's Bat Photo Jonathan Durward
Natterer's Bat Jonathan Durward
What was quite interesting was that all the bats were juveniles who wouldn’t have been looking for a mate. Maybe they were sussing out potential hibernation sites. ( we regularly find bats here on hibernation surveys)