Hummingbirds tend to be tightly wound. They’re quick and aggressive and fearless, which explains why some of the indigenous warrior nobility of South America chose the hummingbird as their emblem. But even the most high-strung bird needs to unwind sometimes. In the photo, Anna stretches his neck, puffs his chest feathers, and spreads his tailfeathers like a fan for a few fleeting seconds. And then it’s back to being that feathered miracle with feet that are too small for anything but hanging on to a twig, and a heart that beats 1200 times a minute.