@gamelee Thanks. The squirrels stand up at attention whenever they see and hear my camera. I do not think they like me looking at them. They do not like people to get close to them (even when I am in my house looking out the living room window).
@sailingmusic I think squirrels are cute, even though they can be destructive (e.g. tearing up my bird feeders). This one had snow on its head, because it was diving into the snow to find acorns on the ground.