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Originally Posted by nightshade  Sounds like Serotine, but if you cannot take their photo you could listen to them 
invest in a detector Bat Detectors |
Really? Serotine always seem so huge to me!! More like blackbirds!
I love serotine because I can hear them echolocating with the naked ear - it sounds a bit like rattly dragonfly wings, oh that and on a heterodyne bat detctor they sound a bit like bat DJs beat-boxing to their own crazy rythym... brilliant - this years fav bat for me
