This male, Ruby-throated hummingbird was showing off for me. I love it when the light hits their gorget just right and you get a flash of that iridescent, ruby-red color they derive their name from.
For bonus points…
1. A piece of armor protecting the throat.
2. An ornamental collar.
3. The scarflike part of a wimple covering the neck and shoulders.
4. A band or patch of distinctive color on the throat of an animal, especially an area of brightly colored feathers on the throat of a bird.
Click on the image to see a larger image and those brightly colored feathers on the throat in greater detail.