Deer lose their antlers because of decline in the level of testosterone they produce. Once the testosterone level declines it cuts off all blood flow, beginning from the base of the antler. The timing varies among deer for various reasons. Nutrition, weather, rut activity and genetics are just some of the reasons. In my area, Northwest Wisconsin I've witnessed a few deer this year that shed their antlers as early as late December, but I also saw some bucks that had them into this February.

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Edited by - James Vee on 02/27/2002 13:13:41