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Old 01-18-2015, 02:18 PM   #2
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Join Date: May 2011
Location: Australia
Posts: 1,457
She probably read a book on it.

Or it could be that hens who sit on their eggs tend to hatch a lot more eggs, so they are more likely to have offspring with the same trait than hens that don't sit on their eggs, and eventually that trait spread far enough into the population to become common.

But I'm going with the book idea. are correct
- selliedjoup
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