I like the things of the night. For me moths and bats have a mystery and a glamour unsurpassed by butterflies and birds. As their world takes place where I can not see, my fascination grows.
To humour me, my husband bought me a moth trap and a bat detector box for my last birthday. I have shared a few finds from the moth trap in previous posts and this weekend I was intrigued by this broken twig of a creature called a buff tip. The mimicry is perfect from the blunt face of the twig end to the exposed heart wood of the white wing. During the day they rest safe from the gaze of hungry birds in trees, but at night when they fly out they are prey to the hunters of the night .
I have always wanted a bat detector, since I saw them being used by experts from my local wildlife trust. The high pitched echo locationtion used by bats is inaudible to human ears, but each species of bat echo locates at a different frequency and by noting which frequency the bat calls at, you can work out which type of bat is swooping over head. I am just learning to use my bat detector and if there are any experts out there I would love some advice!
So far I think I have identified noctuel bats, but were they ordinary noctuels or lesser noctuels? Their call is loud ” chip chop” over the earphones. I have also heard pipistrelles, but again, where they standard ones or Pygmy pipistrelles? At the very top of the range I caught a tantalising burst of the burbling sound of horseshoe bats, but which type?
I have a lot to learn and a lot of sleep to loose in the back garden peering into the darkness, but it beats worrying about the darkness of the human soul and reminds me of how little I know and how many mysteries there are still to explore!
For those of you interested in bats this wonderful you tube clip by Daniel Hargreaves shows lesser horseshoe bats calling from a roost and I swear two of them are dancing!