Black-chinned Hummingbird on Tuolumne River Parkway

My walk last week along the Tuolumne River Parkway Trail at the edge of the Sierra Nevada netted what has become a dependable species. Despite the drought, a few shrubs are flowering at this late date, and this little Black-chinned Hummingbird (Archilochus alexandri) was taking advantage of the situation. I'll see two or three individuals every time I walk down the hill to the river shore. The bird is common across the Southwest and Mexico,

As always, I'm not great at identifying some kinds of birds, including the hummingbirds. I will cheerfully acknowledge your assistance!