How do loudly calling birds not deafen themselves?

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How do loudly calling birds not deafen themselves?

To:	<>
Subject:	How do loudly calling birds not deafen themselves?
From:	"Tania Ireton" <>
Date:	Fri, 8 Feb 2008 08:27:52 +1100

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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