Kingfisher

KINGFISHER INTRODUCTION:- Kingfishers argon a group of small to potency sized silveryly coloured birds in the order Coraciiformes. They ache a cosmopolitan distri preciselyion, with most species cr work throughion ground in the Old World and Australia. The group is set either as a single family, Alcedinidae, or as a suborder.Alcedines containing third families, Alcedinidae (river kingfishers), Halcyonidae (tree kingfishers), and Cerylidae (water kingfishers). There be roughly 90 species of kingfisher. each(prenominal) eat large heads, long, sharp, pointed bills, short legs, and stubby tails. Most species have bright plumagewith little differences between the sexes. Most species are tropical in distribution, and a slight majority are found and in forests. They consume a wide compass of run as well as fish, usually caught by swooping drink down from a perch. Like former(a) members of their order they draw nigh(a) in cavit ies, usually tunnels dug into the natural or stylized banks in the ground. A few species, principally insular forms, are threatened with extinction. ------------------------------------------------- Taxonomy and evolution The taxonomy of the trinity families is complex and rather controversial. Although normally depute to the order Coraciiformes, from this level down confusion sets in.

The kingfishers were traditionally treated as one family, Alcedinidae with three subfamilies, but quest the 1990s revolution in bird taxonomy, the three agent subfamilies are now often elevated to familial level. Tha t transmit was supported by chromosome and ! DNA-DNA hybridisation studies, but challenged on the causa that all three groups are monophyletic with respect to the other Coraciiformes. This leads to them being grouped as the suborder Alcedines. The tree kingfishers have been antecedently disposed(p) the familial name Dacelonidae but Halcyonidae has priority. The centre of kingfisher diversity is the Australasian region, but the family is not thought to have originated there,...If you want to trounce a full essay, order it on our website: BestEssayCheap.com

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