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The forest kingfisher was first described by the naturalists Sir William Jardine and Prideaux John Selby in 1830. It was known for many years by its old scientific name of Halcyon macleayi before being transferred to the genus Todiramphus.
The white-throated kingfisher (Halcyon smyrnensis) also known as the white-breasted kingfisher is a tree kingfisher, widely distributed in Asia from the Sinai east through the Indian subcontinent to China and Indonesia. This kingfisher is a resident over much of its range, although some populations may make short distance movements.
The IUCN Red List of Threatened Species by the International Union for Conservation of Nature is the best known worldwide conservation status listing and ranking system. . Species are classified by the IUCN Red List into nine groups set through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmenta
The brown-breasted kingfisher (Halcyon gularis) is a tree kingfisher endemic to the Philippines, where it is widely distributed. This kingfisher is a resident over much of its range. [ 1 ]
A Regional Red List may be created by any country or organisation by following the clear, repeatable protocol. The process is as follows: All information relevant to a species conservation status is collected, including species distribution, population trend information, habitat, ecology and life history information, threats to the species and conservation measures currently in place.
The current genus Halcyon was introduced by the English naturalist and artist William Swainson in 1821, with the woodland kingfisher as the type species. [4] Three subspecies are recognised: [5] H. s. fuscopileus Reichenow, 1906 – Sierra Leone to south Nigeria and south to DR Congo and north Angola
The Red List Index (sampled approach) (SRLI) has been developed in order to determine the threat status and also trends of lesser-known and less charismatic species groups. It is a collaboration between IUCN members and is coordinated through the Institute of Zoology (IoZ), the research division of the Zoological Society of London (ZSL).
The black-capped kingfisher (Halcyon pileata) is a tree kingfisher which is widely distributed in tropical Asia from India east to China, Korea and Southeast Asia. This most northerly of the tree kingfishers is resident over much of its range, but northern populations are migratory, wintering south of their range in Sri Lanka, Thailand, Borneo and Java.