Bats have a system whereby they don't listen when they're emitting
their unltrasonic pulses, but in the intervals they listen again for
the echoes (can't remember whether it's neurological or mechanical (ie
closing their ears)).
Although it isn't so critical for birds (they're not echo-locating)
they may have some similar system.
cheers
John Leonard
On 08/02/2008, Tania Ireton <> wrote:
> A friend rang me last night to ask how loudly calling birds such as Rainbow
> Lorikeets and Sulphur-crested Cockatoos not deafen themselves with their
> screeching? She was reading a new book on cicadas which said that cicadas
> are able to disconnect something in their hearing so as to deaden the
> incoming sound before they started calling themselves (I didn't get all the
> details). She wanted to know how birds manage. Any ideas?
>
>
>
>
>
> Regards,
> Tania
>
>
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.516 / Virus Database: 269.19.21/1263 - Release Date: 6/02/2008
> 8:14 PM
>
> www.birding-aus.org
> birding-aus.blogspot.com
>
> To unsubscribe from this mailing list,
> send the message:
> unsubscribe
> (in the body of the message, with no Subject line)
> to:
>
--
John Leonard
Canberra
Australia
www.jleonard.net
===============================
www.birding-aus.org
birding-aus.blogspot.com
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
===============================
|
