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Agkistrodon piscivorus leucostoma

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Western Cottonmouth
June, 2000- Wayne Co. MO

Where the Rattlesnakes were once common to see in great numbers, Cottonmouths are still very common in great numbers.  In Southern Illinois, these snakes hibernate in the bluffs, and in the spring, there is a migration from the hibernacula to the swamps.  During the spring and fall,  many snakes can be seen making this journey.  Cottonmouths are the most common snake in the area, and can be seen in great numbers.  My dad recalls that in one day, he saw well over a hundred snakes, most of which were cottonmouths.

I've found this species in the following counties:
Wayne Co. MO
Jackson Co. IL
Union Co. IL
Johnson Co. IL

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