calypte (hood or veil) costae (given in 1839 by Bourcier in honor of Louis Marie Pantaleon Cost, Marquis of Beau-Regard, in 19th-century France, owner of a large collection of hummingbirds)
Saturday, March 31, 1984 — 12:00 noon
Arizona-Sonora Desert Museum, Arizona
I spotted this gorgeous Costa’s Hummingbird as it flew up to the red flowers on an ocotillo stalk, hovered briefly, then flew off.