And if in the US you'd hear only the first half of Blackburnian Warbler songs
:-(
-----Original Message-----
From: John Leonard
Sent: Wednesday, 12 May 2010 11:56 AM
To: Christopher Tidemann; Canberra Birds
Subject: bats
Probably what it is then (White-striped Mastiff Bat). I should have
said that I have seen various little pipistrelle type bats around the
suburb, and once a larger bat (probably a Sheath-Tail sp), but I've
never heard one.
I suspect if I went back to the UK I wouldn't be able to hear
Grasshopper Warblers either :-(
John Leonard
On 12 May 2010 10:17, Christopher Tidemann <> wrote:
> There are around 6 species of insectivorous bats that are quite common in
> Canberra suburbs, especially where there are old trees. All use high
> frequency echolocation calls to navigate and find prey, but most of them are
> quite inaudible, even to young humans, except with special listening
> devices. The White-striped Mastiff Bat, however, makes a very loud,
> high-pitched call that is audible to many people; less so with the more
> elderly. This species flies high and fast so that if this is the culprit
> the calls would move across the sky and fade off into the distance quite
> quickly. In the summer months this species can sometimes be seen feeding on
> moths attracted to the aircraft beacon on Mt Ainslie.
>
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