I'd put book on a deer. We live in the middle of the Adirondack forest and deer are regular visitors, especially around bird feeders, etc. They love the bird seed!
Except for the snow, I'd say to be careful because we also have black bear in our area, but not this time of year (they're hibernating). Gotta be a deer and they're really skitterish, so I don't think you need to worry too much about them overtaking you.
Turkeys, coons, etc. are also frequent visitors, but the height is right for a deer.
It's wonderful living in nature. I just try to remember that they were here first and we moved into their territory.