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Spectacular video of 57 hummingbird species, including all 16 US species, shows that for all their beauty, they are brainy little beasts that live by the Law of the Jungle. Viewers learn that hummers also are single moms, deadbeat dads, teenage chicks and avian connoisseurs. Nesting, brooding and many other behaviors are shown in this 1-hour show -- a must-see for anyone interested in hummers, birds, and nature.