In reply to R C Macaulay's message of Mon, 20 Oct 2008 21:44:42 -0500: Hi, [snip] >next... speaking of chickens.. anyone want to hazard a guess as to why a >chicken can lay an egg ( calcium shell ),.. even IF.. their food intake has >NO calcium content?? [snip] I think the suggestion has been put forward before, that they lose Calcium from their bones in order to create eggshells. Of course they wouldn't be able to do that for very long, but as a stopgap measure it might make evolutionary sense. Regards,
Robin van Spaandonk <[EMAIL PROTECTED]>
