If either of those are the answer then what happens when there's another
bird, or several, sitting right beside them making the same noises?
Maybe it's just not that much of a problem for them. Humans work in
some very noisy environments and while they do end up going deaf it
takes a while and may not result in total deafness.
Peter Shute
wrote on Friday, 8 February 2008 9:25
AM:
> I'm also guessing a bit, but it might be a question of
> direction of projection. For example, I'm a renowned big
> sneezer, to the point that my wife complains about the noise,
> but I notice very little noise. In this case the pressure
> wave is travelling forward out of my head, away from my ears.
>
> EB
>
> On 2/8/08, John Leonard <> wrote:
>> 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
>>>
>>>
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>>>
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>>
>>
>> --
>> John Leonard
>> Canberra
>> Australia
>> www.jleonard.net
>> ===============================
>> www.birding-aus.org
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>>
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