birding-aus
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To: | <> |
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Subject: | Re: Factors affecting clutch size |
From: | Peter Jacoby <> |
Date: | Sat, 13 Dec 2008 10:37:09 +0900 |
BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; } My understanding is that the larger clutch sizes of hole-nesting birds is associated with a longer period betwen hatching and the young leaving the nest. For example the young of most species of honeyeater have fledged within 15 days whereas treecreepers remain in the nest for up to 25 days. Presumably the lower risk of predation for hole-nesters means that the young can afford to grow more slowly, consuming less food which enables the parents to share out a limited food resource between more little beaks. Peter Jacoby ==============================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: ============================= |
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