In places like here, Maryland, where we don't get much snow they'll belly up while it's going hard. They may get up from their beds and feed around, but they'll stay within a few yards of where they bedded. When it stops they'll be moving. Right now we have 5 inches of fresh stuff and it's still going to fall throughout the day. They aren't moving unless someone pushes them. If the snow stays for a few days and a second blast comes they'll be a little more custom to it and will infact feed later and start earlier. Once the initial shock of it is over they go back to normal but have to scratch longer in daylight and harder for food. In places like NY where snow is a normal thing... they go about business as usuall but again have to scratch more for food. If you have any food sources NOT on the ground.... like honeysuckle, standing corn and things like that..... they'll hit it first and stay close.