We have dogs all around us (neighbors) so i doubt deer, and cats, dogs would've tried to get at my birds, so that leaves skunk.
second picture at least in the picture looks like deer tracks. unless the dogs are in there then it would not matter about the deer. they go right next to my livestock guardian dog as she barks her head off. they know she's fenced . that picture looks like deer or goat type hoofed tracks but they look like what the deer leave in the snow here all the time anyways