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Brown long eared bats in Northumberland, also notice another species in this clip.

Brown long eared bats flying in Northumberland

Northumberland Natterer bats flying in a traditional farm building. Filmed in slow motion to show the beaty of their flight.

About half way through this thermal, two bats merge as one then one disappears behind roof truss.

Bats swarming during the late summer. Probably encouraging juveniles to come out and practise flying

Daubenton's juvenile at 4.8g being reunited with her mum

Soprano pipistrelle juvenile bats have to be tough up in the hills where the wind blows near constantly

Brown long eared bats leaving a cottage

Natterer's bats warming up then leaving and entering a traditional Northumbrian barn

BLE's exiting a building slowed down five times

Pipistrelles going home after a long night catching midges

BLE's 14 10 23 shortened

Shot at 240 fps, see their wing beats

Sometimes when not echolocating, bats get it wrong