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Date Posted: 02:02:32 07/27/07 Fri
Author: Larissa
Author Host/IP: 24.10.28.247
Subject: Re: Informational sites for female buttons?
In reply to: Susan 's message, "Re: Informational sites for female buttons?" on 07:33:51 07/26/07 Thu

Actually the Kiwi lays the largest egg proportional to her body size of any bird. She only lays one or two eggs a year, and just prior to lay, the egg makes up 1/4 of her body mass. Here's an X-ray image of an expectant Kiwi mom 15 hours prior to lay:

http://books.google.com/books?id=ymLBZWGM7KEC&pg=PA336&lpg=PA336&dq=kiwi+egg+%22x+ray%22&source=web&ots=w5Li4Ueox_&sig=HDSl0en5l3TkdFKDfYayUwMPuYM

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