Archilochus alexandri
Our Black-chinned Hummingbirds show up in early April. Folks up at higher elevations see them a few
days before we do. Males arrive first, and then about 2 weeks later, we see the first females.
They will breed here, although I have never found a nest near my house. However, this fellow
seems to have set up a serious guard post in the sumac bush near the feeder, so we'll see what that means.
In another few weeks, people will start seeing Rufous Hummingbirds, and then the dominance hierarchy will change.