Close up of an Anna’s Hummingbird's (Calypte Anna) feathers. Each magenta feather measures about 1/10th of an inch across. Microstructures in these feathers interfere with light to create this magnificent color, which male hummingbirds use to attract females.
Anand Varma is a National Geographic Explorer and award-winning photographer based in Berkeley, CA. Learn more about Anand Varma.