I jotted down some notes at Bonny Glen Up Close the other day about the hummingbirds that are in love with our feeder. We think they are Anna’s Hummingbirds.
(Someone please correct us if we’re wrong.) The one above is the male:
emerald back, ruby throat. These next two photos show the female, more
modestly attired in shimming green without the crimson ascot.

How we have marveled to see them perching on the feeder instead of
hovering, wings aflutter! Besides their coloring, the reason we’re
pretty sure they are Anna’s Hummingbirds is because they sing:

This bird is
most often found singing a series of scratchy sounds, including a sharp
"chee-chee-chee", from a high perch. This is the only California hummer
to sing a song. When moving between flowers they make a "chick" sound.

Our trio—we’ve counted two females and a male at once—are quite the
musical bunch, chittering away all day. They seem to live in a tree
right behind our backyard fence. We’ve seen them perched on a branch
there (more perching!) and zooming back and forth to our feeder.

Don’t be fooled by the female’s demure attire. "Though she be but little, she is fierce." Should a weary sparrow happen to pause on the feeder’s perch for a moment, she will fly in his face and scold him furiously.

Reminds me of someone else I know.