JH Survey 2 20160701 EM3+ wav files

Panshanger Barbastelle Survey 2
1 July 2016
21:25-23:00
Justin A T Halls
EM3+ 384ksps 16bit
Neumic microphone at 5%
Luton 9:50pm 12C 77% 1008hPa 6.7m/s WSW light cloud
51.798956 -0.145018
Pleasant, clear evening with base camp at the junction of two large and one smaller
ride through the coniferous part of the Panshanger woods.  Quite breezy in open
areas at times.  Mainly Common Pips with one or two Sopranos and a nyctalus,
probably Leislers.  No confirmed Barbstelles at this location although we thought
we had a pair of Barbies fly past at 22:21, observed flying about waist height from the
northern ride and departing down the southern ride.
On analysis looks like BLE's, sweeping 50-25kHz with some second harmonic.  Area
at the junction quite open so not likely to be Barbastelle clutter type calls.
The Tascam was located about a 100yards down the ride to the south and did not pick up
the 35kHz bat at all.