Flying Jewels: Where Hummingbird Colors Come From

Discover the clever optical trick that gives hummingbirds their characteristic iridescence, among other hummingbird facts.

Sapphire-spangled Emerald hummingbird
Many hummingbirds have a "bib" of especially iridescent feathers on their chests, making them more vibrant when viewed by a rival hummingbird from the front.
Photo by Nick Athanas