It appears that the bird feeder isn't just attracting birds. You just never know what you'll see when you look out the windows. Sometimes it's too dark to get a good photo of visitors if they're hanging out by the trees. We knew that there was at least one skunk in the area. We'd seen evidence of it visiting the yard, even before the snow. We saw him (or her) leave through the field. If we hadn't seen him leave, we would have still known where he went, because he left plenty of tracks in the snow showing his trail.
It would be nice to get a picture of the deer that sometimes visit. We'll keep trying. Until then, we'll enjoy seeing the critters that come by and share the photos that we do get.