Kingfisher

KINGFISHER INTRODUCTION:- Kingfishers argon a group of small to posture sized glaryly coloured birds in the order Coraciiformes. They can a cosmopolitan distri scarceion, with most species cr squanderion ground in the Old World and Australia. The group is set either as a single family, Alcedinidae, or as a suborder.Alcedines containing ordinal families, Alcedinidae (river kingfishers), Halcyonidae (tree kingfishers), and Cerylidae (water kingfishers). There ar 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 merely in forests. They consume a wide compass of course as well as fish, usually caught by swooping level from a perch. Like otherwise members of their order they draw shape up in cavities, usually tunnels dug into the natural or conventionalized banks in the ground. A few species, principally insular forms, are threatened with extinction. ------------------------------------------------- Taxonomy and evolution The taxonomy of the triad families is complex and rather controversial. Although commonly 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. That 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 Austra! lasian region, but the family is not thought to have originated there,...If you want to play out a full essay, order it on our website: BestEssayCheap.com

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