[FoNC] bats continued

[rjmwilson at freeuk.com]

Ellen: Just for info.

With the help of Prof Ben Wilson (known for his work on dolphins at 
Cromarty, Inverness) I have made two separate recording sessions looking 
for bat activity in NC. Previously I had  negative results with a hand 
held sensor. This new  attempt is more sophisticated with Audiomoth 
recording devices attached to trees and programmed to record at set 
intervals from dusk to dawn. Recordings were made on 20-21 Sept. and 7-8 
October. Bats have now been recorded and so far two species identified.
Interestingly, at the back-gate area of NC only a few bats were recorded 
passing through ie. entering and leaving the cemetery. Overnight 
activity is at the other end near Cameron Toll. Judging from the echo 
location frequencies, the two species, identified by an expert, are the 
common pipistrelle and the soprano pipistrelle. Two other possible 
species were too faint to identify.
One more trial is in progress before I go into hibernation. Will update 
in due course.

Best. iain wilson.