See those little dots on the ice and snow? They did have me perplexed for a while. Rabbit pellets!
I don't know enough about the Cottontail to say if this is the designated latrine, but I only found bunny poo in one little area during my trek through my frozen backyard swamp.
What I noticed is that this spot is covered over with Greenbriar. In an earlier post, this thorny vine was described as a safe haven. Perhaps the bunnies are hanging out here? I don't know, but I will be watching.