: 333 A year later, he established a separate genus Nauclerus for the scissor- and swallow-tailed kites. But Vigors noted that only the black-winged kite had rounded undersides on the nails of its talons, a trait found in the osprey but not in any other raptors, and thus suggested a separation of Elanus into two sections. The pattern of scales on the legs (acrotarsi) is reticulated, and the toes are separated. These species all have pointed wings with the second primary the longest. In Elanus, he grouped the black-winged kite (now several Elanus spp.), scissor-tailed kite (now Chelictinia), and swallow-tailed kite (now Elanoides). He characterized the kites as having weaker bill and feebler talons than the buzzards, tail more or less forked, and wings longer than the tail. In 1824, Vigors proposed five divisions or stirpes of the family Falconidae: Aquilina (eagles), Accipitrina (hawks), Falconina (falcons), Buteonina (buzzards) and Milvina (kites, containing two genera Elanus and Milvus).
Black-breasted buzzard, Hamirostra melanosternonĪ few of the traditional Perninae are also called kites.Slender-billed kite, Helicolestes hamatus – formerly in Rostrhamus.Mississippi kite, Ictinia mississippiensis.Double-toothed kite, Harpagus bidentatus.Subfamily Milvinae or Buteoninae, or tribe Harpagini.Yellow-billed kite, Milvus (migrans) aegyptius.Black-eared kite, Milvus (migrans) lineatus.Cape Verde kite, Milvus (milvus) fasciicauda – extinct (2000).Swallow-tailed kite, Elanoides forficatus.Genus Elanoides – often classified in Perninae.Bat hawk, Machaerhamphus alcinus – traditionally Elaninae or Falconinae.Scissor-tailed kite, Chelictinia riocourii.Black-shouldered kite, Elanus axillaris.The group may also be differentiated by size, referring to milvine kites as "large kites", and elanine kites as "small kites". Some authors use the terms "hovering kite" and "soaring kite" to distinguish between Elanus and the milvine kites, respectively.
The term is derived from Old English cȳta (“kite bittern”), from the Proto-Indo-European root * gū-, "screech." Kite is the common name for certain birds of prey in the family Accipitridae, particularly in subfamilies Milvinae, Elaninae, and Perninae. JSTOR ( November 2014) ( Learn how and when to remove this template message).
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