There's a large tree in our neighbor's yard and birds of all kinds (as well as the occasional hunting cat) inhabit it from season to season. This morning it was one of my favorites - a Texas grackle. They are raucous but the variety of calls they make is amazing. I think they are even more vocal than our mockingbirds, though the mockingbirds are usually more gentle in their vocalizations.
I sat outside and listened to the grackle this morning and wished I could have put some of his calls on this blog for you all to hear. At several points, there were sounds that appeared to be from him flapping his wings. SWMBO says he must be courting.
You can read more about grackles here.