Most mature adult male hummingbirds of a given species are pretty hard to tell apart from each other —— unless there is an anomaly. This gorgeous adult male Rivoli’s Hummingbird had an interesting anomaly. His lower mandible is broken off. I saw him only briefly, late one afternoon. It makes you wonder what could have happened, when and how. He seemed healthy and was able to eat so he apparently has overcome this problem. Although this is not a “perfect” specimen of the species, I find him perfectly imperfect.