I was out there Sunday AM and there was frost on the ground when I left. I had thermals on and packed my deer hunting gloves with the flip off mits, so your fingers are exposed. My hands got cold in the 20-30 minutes i was there, but then he flew down and I shot him, so i go tot go home early :grin:
I don't know that it gets too cold for them, I see more during deer season than any other time.