Mt Buller Bat?

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Bradley Clarke-Wood

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Nov 28, 2017, 12:05:36 PM11/28/17
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Hello,

I've attached an audio recording. Anyone got any ideas if it's a bat and if so, what it is?

Freq ranges from 80 k to 40 k

Cheers

B.
RB272108_39.zc

Stefan Nyman

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Nov 28, 2017, 1:05:06 PM11/28/17
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You don’t have any audio recording? Wav or mp3?

 

^ö^ Stefan

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Terry Reardon

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Nov 28, 2017, 5:46:54 PM11/28/17
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Hi Bradley,

Vespadelus darlingtoni or regulus seem likely candidates based on fm shape and Fchar ( given this series of pulses are going into and out of a 'feeding buzz'  and thus are steeper than they might be if the bat was just searching). Be interesting to know if you have sequences immediately either side of this one.    in SA at least those two species are often hard to separate unless you have a good series of search phase pulses (when darlingtoni has much longer shallower pulses an at 40kHz which I haven't seen regulus do) ), but both species can overlap in  characteristic frequency.  

I have a series of release  calls of both species from western Vic courtesy of Lindy Lumsden  and colleagues,  and amongst these are calls from both species that have pulse shape and freqs  similar to those in your file..

Terry





On 29 November 2017 at 04:34, Stefan Nyman <stefan...@chiroptera.se> wrote:

You don’t have any audio recording? Wav or mp3?

 

^ö^ Stefan

 

Från: kilo...@googlegroups.com [mailto:kilohertz@googlegroups.com] För Bradley Clarke-Wood
Skickat: den 28 november 2017 18:06
Till: Australasian bat call group
Ämne: [Australasian batcall group: 333] Mt Buller Bat?

 

Hello,

 

I've attached an audio recording. Anyone got any ideas if it's a bat and if so, what it is?

 

Freq ranges from 80 k to 40 k

 

Cheers

 

B.

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Chris Corben

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Nov 28, 2017, 8:25:16 PM11/28/17
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Yes, I second Terry's comments. I would put my money (well a tiny bit of it) on regulus, especially given the negligible chance of being proven wrong. I think it would be surprising to see a sequence like that from darlingtoni without some flatter calls and some of these pulses (eg around 2.9 seconds) are pretty typical of what you see a lot from VERE. I would expect VEDA in a similar sequence to show many pulses which turned around more at the bottom to reach much lower slopes, even if they weren't any longer in duration.

I would say any of your individual pulses could be either, but the sequence as a whole fits better with VERE.

Cheers, Chris
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B. Clarke-Wood

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Nov 29, 2017, 12:18:56 AM11/29/17
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Thank you, Bat Call Cabal!

Any chance there is a region-based guide to the echolocation calls of  Victorian microbats floating around like the one produced for NSW?

Cheers,

B.

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