Larry, you're right, they are sometimes easier to kill later in the morning. Most of my birds are killed within an hour of dawn, or later from 0900-1200. I think their hens leave them, and they go out searching again. I've killed a few that gobbled their arses off at first light, called back to me, and then disappeared. Only to come right in to me, silently, an hour or two later. That's why I hate to move after I've had a bird talking at me. I still go out early tho, I love sneaking around in the dark, and watching the woods wake up.