To: "Dave Torr" <>, "peter crow" <>
Subject: Lifespans.
From: "Greg & Val Clancy" <>
Date: Tue, 26 Aug 2008 18:32:23 +1000
Dave is certainly correct with respect to this issue. I have been banding birds since 1971 and at that time it was thought that small birds would expire at about 5 years of age due to their high metabolic rates. When I retrapped a White-browed Scrubwren at about 18 years of age I realised that our preconceived ideas about aging in birds needed to be reviewed. Certainly not all birds will reach the maximum age but many small passerines are now showing that an expected five year lifespan was too pessimistic.

Most maximum ages attained by birds are limited by the time span of the particular studies that have been carried out to date. Over time these maximum ages are likely to increase, especially for larger birds.

Greg Clancy

<Prev in Thread] Current Thread [Next in Thread>

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU