I was surprised to discover a Western Kingbird pair nesting in the big dead cottonwood tree today. Wish I would have had time to take photos of the female carrying nesting material but I was on a tight schedule.
That tree has always been popular with all species. The kingbirds put an end to that. They defend it vigorously and won't let another bird near it. They get upset when I get near too, which is one reason I didn't get better photos. One of these days I will though.