Note: These Challenge Questions coincide with the Spring 2006 Reports Challenge Question #1
From: Janice Morgan <jdmemail@msn.com>
Date: Fri Feb 17 2006 - 12:53:17 EST
I think the variables that affect the number of robins in winter time are: food supply (berries, worms, bird feeders, etc.), water supply, and good shelter. I think severe weather may also affect robins.
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