Wally was one of those people who could be comfortable in absolute silence. Well, perhaps not absolute. There were sounds of nature all around them. The wind in the leaves, the gentle trickling of the duck pond, the movement of feathers and waddling of webbed duck feet against the ground. It was wonderful and beautiful and Wally didn't have to talk to fill the silence. He let nature do that for him.
After a moment Wally turned the bag over to dump out the last of the crumbs so that the Ducks could finish their feast. he rolled it up to shove in his pocket as he watched them eat.