There are a couple of male red-winged blackbirds that visit my feeder. One has a very thin, pale line along his shoulders where the "red" is but you can't really see the full color until he's in flight (he's featured here).
But then there's this guy, full two-toned color on the shoulders. He is beautiful, and when I first saw him I thought, wow, I bet you gets all the ladies. And it's probably true- these guys are the playboys of birds with many males having more than one mate at a time.