Bat ID by sonogram (1 Viewer)

Hi,

New to bats so any help with these sonograms would be great. I was thinking possibly Natterer's but the frequency seems to stop at around 40kHz which is too high for Natterer's?

Considered Whiskered and Brandts but again, the frequency seems too high at the lower end of mine?

Only one in my book which could fit is Alcathoe but the higher end seems not high enough in my sonograms (plus it's quite rare?)!

Any help would be much appreciated as a newbie!

Thanks!

If you saw the bat, then it's size, flight characteristics, could maybe help. Also, the environment it was recorded in will give more clues. Most of the literature / classic sonograms refer to bats in open spaces. They behave quite different in a cluttered environment.

Yours could be a Common Pipistrelle in clutter, where the bat has to work harder resulting in faster repetition, frequency modulated calls.

Also, beware how you tune the calls on software. It is possible to make a bat start and finish at pretty much any value you like depending on how much brightness you give the signal. Only you can know which is correct based on your experience and familiarisation based on known species.

I would also zoom out of the sonograms a bit to get a better feel to how many calls per second, which may give more clues to the identity.

Maybe this one will go unknown for a while, then become obvious as you have more known samples taken with your kit to compare with.


Hope this helps,
Peter