Originally Posted By: For the Family
..... 75% of the holes dont have chimnies. Is that odd? .....


Looking at the last few photos in that second link, to me, it looks like chimneys were probably there when the burrows were new and just got knocked down, possibly by rain.

FWIW

I have never seen a muskrat burrow that looks anything like that.

Last edited by Bill D.; 12/09/15 05:10 PM. Reason: Clarification
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