The time was nearly 5:30. Sun well hidden by dense fog. Dashing about in the Cypress trees, in front of the Visitor Center, were 3 pair of Western Blue Bird, numerous Yellow-rumped Warbler and a pair of Townsend Warbler. They were finding insects (invisible to my eyes) on the tree trunks, on the ground, and in the air. I think these little insect eaters were gobbling down as much as they possibly could before night set in.
Earlier I had driven into the Campground. Two crows were chasing a tiny field mouse around the wide base of a Cypress. Eventually the mouse was caught by one of the crows, who then flew to the top of the Cypress and ate the little darling. First time I had observed this behavior. I knew Crows were scavengers but did not know they were hunters.