Emerald toucanet ( Aulacorhynchus prasinus).Wagler's toucanet ( Aulacorhynchus wagleri).The toucan family has five extant genera as follows: Image The family includes toucans, aracaris and toucanets more distant relatives include various families of barbets and woodpeckers in the suborder Pici. The name of this bird group is derived from the Tupi word tukana or the Guaraní word tukã, via Portuguese. In Africa and Asia, hornbills occupy the toucans' ecological niche, an example of convergent evolution. They sometimes fence with their bills and wrestle, which scientists hypothesize they do to establish dominance hierarchies. Toucans are usually found in pairs or small flocks. Toucans are resident breeders and do not migrate. When the eggs hatch, the young emerge completely naked, without any down. They make their nests in tree hollows and holes excavated by other animals such as woodpeckers-the toucan bill has very limited use as an excavation tool. Toucans are arboreal and typically lay 2–4 white eggs in their nests. The family includes five genera and over forty different species. They are brightly marked and have large, often colorful bills. The Ramphastidae are most closely related to the American barbets. Toucans ( / ˈ t uː k æ n/, UK: /- k ə n/) are Neotropical members of the near passerine bird family Ramphastidae. Clockwise from top-left: Toco toucan ( Ramphastos toco), Plate-billed mountain toucan ( Andigena laminirostris), Chestnut-eared aracari ( Pteroglossus castanotis), White-throated toucanet ( Aulacorhynchus albivitta)
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