National Geographic : 1951 Aug
© National Geographic Society 258 Kodachromes by Harold E.Edgerton Anna's Hummingbirds Hover Above a Sanctuary's Glass Feeders for a Banquet of Sugar Water. Both Are Males Like helicopters, hummingbirds can hang in mid-air, fly forward, backward, or straight up. Ardent males, divingfrom 100-foot heights orswinging inarcs, perform nuptial dances before fascinated females. Other Western species migrate south of the border, but Anna's Hummingbird, aloyal Californian, stays athome. These bottles, each with six holes in its metal cap, permit hummers to thrust in long tongues. The liquid level is kept too deep forbees.