Oh yes. I've noticed when they are cold, they're dumb. I've been after a couple that have holed up in the woods. I've not had the time to just sit them out, and the brush and canopies make it very difficult. I have nailed two of them in the past week, both with a 17hmr. The last was only 20ft, as I was walking. He blended in with the leaves perfectly. I caught the movement as he stood up ( I froze, gun down), after a few secs he went back to the ground. I slowly raised and.......The only problem was his little flip/dance thing. I retreated to the house and fetched the 30.06. I staked out another hillside for a little while, but never saw any of his friends.
I was looking forward to it, one hillside to another, 100yd min shot with the 30.06 with a 6-24x scope up top. With all the trees and brush, it would have been a challenging shot. (unless it stood up and smiled).
from what I'm noticing, they don't see that well, but detect motion.