Mystery booming

Subject: Mystery booming
From: Marc Anderson <>
Date: Fri, 04 Oct 2013 00:23:13 +1000
From the recordings I've heard, bitterns usually make 3-6  single 'booms' about two seconds apart, then there is a longer pause before repeating the call again. The data I've looked at indicates they call repeatedly in the breeding season.

Perhaps your bird flew to another area after the first call, or even better, became distracted by a mate ...


Thanks Marc, that's two votes for bittern. Can anyone tell me if it's unusual 
for a bittern to only call three times like that? The recording is a couple of 
hours long, and there are no other similar calls in it.

Peter Shute

Sent from my iPad

On 3 Oct 2013, at 7:23 pm, "Marc Anderson" 
<<m("","marc");">>> wrote:


I have a look at the spectrograph and listened a few times on headphones and it 
definitely sounds like a distant Australasian Bittern.

Well done on getting this recording, I've been trying to track them down the 
last few weeks and didn't hear any booms in the Riverina area nor in the 
Hawkesbury swamps in Sydney.

Marc Anderson

Wild Ambience
Sydney, Australia
P +61 (0) 430 072 299


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