Hummingbirds gather around a hummingbird feeder filled with sugar water, in a backyard in the San Fernando Valley section of the city of Los Angeles, July 17, 2014. Hummingbirds are among the smallest birds in the world with most species measuring between 7.513 cm (35 in). When hovering in mid-air the tiny avians flap their wings between 40 and 80 times per second. (Photo by Robyn Beck/AFP Photo)
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