MINNEAPOLIS – A rare slithery sighting was made in rural parts of Southeast Minnesota on Wednesday.

Biologists who are part of the Minnesota Nongame Wildlife Program (MN Nongame) were conducting field surveys when they stumbled upon a den of timber rattlesnakes .

According to the wildlife program, these snakes are only found in the Driftless region in the blufflands of southeastern Minnesota. Their unique ecology requires them to enter a state of dormancy in their dens in the bluffs during the cold winter months.

Video taken by the Minnesota Department of Natural Resources (MN DNR) showed a den of timber rattlesnakes that were rattling their tails at the person recording the video.

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"Although they are a venomous sn

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