Ramosomyia violiceps – violet-crowned hummingbird, Ramsey Canyon, Arizona. The photographer notes that feeders apparently encourage overwintering of some migratory birds such as this violet-crowned hummingbird, which was photographed on February 23 of this year. We see similar behavior among Canada geese (Branta canadensis) in Boulder, Colorado, where Dr. Dullien and I both live; she comments on "how new food sources can alter bird migration patterns causing some species to forgo migration."
