After searching the web for some example bat sonograms and failing to find a decent reference collection I've uploaded these examples.
All the sonograms have been recorded using either a Batbox Duet heterodyne and frequency division bat detector or an Anabat frequency division detector . The Duet detector is at the 'budget' end of detectors, it still produces acceptable sonograms that can help identify the bat to species. The Anabat is a more expensive detector that automatically records calls onto a compact flash memory card.
The Duet sonograms are the colour ones, the Anabat ones are balck and white.
The sonograms have been produced using Batscan software (Duet) or AnalookW.
All sonograms have been produced during real field surveys for foraging bats. They are not sonograms of known bats from roosts.
Comments to my email are welcome, more species will be uploaded when available. If you disagree with any sonogram ID, do please let me know.
Soprano Pipistrelle, North Devon, August 2005
Soprano Pipistrelle with a brief Common Pipistrelle (0.06 - 0.08 secs), Cheddar, September 2008
Common Pipistrelle, North Devon, August 2005
Common Pipistrelle, Somerset 2008
Noctule, Somerset, August 2008
Leislers/Serotine and Noctule, Wiltshire, June 2010
Serotine A, Somerset, July 2005
Serotine B, North Devon, August 2005
Serotine, Somerset, August 2008
Natterer's, Somerset, July 2005
Natterer's, Somerset, August 2008
Greater Horseshoe, Devon, July 2009
Lesser Horseshoe, North Devon, August 2005
Lesser Horseshoe, Cheddar, Somerset, September 2008
Common Pipistrelle followed by Lesser Horseshoe, Somerset, September 2006
Daubentons, Somerset, September 2006
Daubentons, Cheddar, Somerset, September 2008
Daubentons with social calls, July 2009
Whiskered/Brandts (I think - anyone?!), June 2010
Barbastelle, Somerset, September 2009