Soprano Pipistrelle?

[Lincs Yellowbelly]

Had the bat detector in a new area for me at the weekend and picked up mostly Pipistrelle bats, but the sounds where deeper and louder at around 55 on the detector. Are these likely to be the Soprano variety?

[ChrisJB]

Originally Posted by Lincs Yellowbelly

Had the bat detector in a new area for me at the weekend and picked up mostly Pipistrelle bats, but the sounds where deeper and louder at around 55 on the detector. Are these likely to be the Soprano variety?

I'm a bit of a novice with my bat detector Lincs, but according to my book, the soprano peaks at 55kHz, whilst thye normal pip' peaks at around 45kHz. So yes, I reckon you are right.

Regards, Chris

[thunder]

The other possibility is that they were Common Pipistrelles shifting their echolocation frequency upwards, which they can do if they feel like it! Was it raining?

henrya

[Lincs Yellowbelly]

No it wasn't raining, it was lovely weather. Also had the odd bat that produced louder sounds around 45, which led me to believe that the others where Soprano's

[hachidori]

Soprano and Common Pips will use the same area at the same time, so you may have both... This is an image of a recording showing the two species, echolocating at 45 and 55...

[liz103]

It also could depend on what sort of vegetation was around at the time. I have been near heavy vegetation and it gave the impression of 55 pips becasue the echolocation was distorted. If it was a pretty open area, I'd probably say they were 55 pips.