25 April 2003
Vol 300, Issue 5619

About The Cover

Cover image expansion

COVER The little hermit hummingbird (Phaethornis longuemareus) at a flower of Heliconia trichocarpa in Costa Rica. Studies of hummingbirds have shown a correspondence between their favored flowers and the length and curvature of their bills. See page 630. [Image: Phil Savoie]