Not too long ago I was in the Chicago area and just before heading to the airport I took a walk through the snowy Morton Arboretum. The roads and paths were all frozen over and it took a bit of concentration to walk. As it was a Saturday morning, runners also showed up and to my amazement managed not to slip as they passed by. Eventually I noticed that many were wearing a type of running cleat attached to their shoes. On the other hand these geese had only webbed feet and feathers to get them going. I thought a couple might be frozen in the ice but they seemed to know what they were doing and moved around a bit. I think the only one that didn't know what he was doing was the photographer from Florida.