Rufous-backed dwarf kingfisher | |
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On the island of Java in Indonesia | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Coraciiformes |
Family: | Alcedinidae |
Subfamily: | Alcedininae |
Genus: | Ceyx |
Species: | C. rufidorsa |
Binomial name | |
Ceyx rufidorsa Strickland, 1847 | |
The rufous-backed dwarf kingfisher (Ceyx rufidorsa) is a small bird in the kingfisher family Alcedinidae that is found in parts of Maritime Southeast Asia. It was formerly considered to be conspecific with the black-backed dwarf kingfisher and together the two taxa were known by the English name "oriental dwarf kingfisher".
This tropical kingfisher is easily distinguishable from other birds in its range due to its red bill, yellow-orange underparts, lilac-rufous upperparts, and rufous back. It resides in lowland forests, typically near streams or ponds, where it feeds upon insects, spiders, worms, crabs, fish, frogs, and lizards.
The rufous-backed dwarf kingfisher was formally described in 1847 by the English naturalist Hugh Edwin Strickland under the current binomial name Ceyx rufidorsa. He specified the type locality as Malacca at the southern end of the Malay Peninsula. [2] The specific epithet combines Latin rufus meaning "rufous" with dorsus meaning "back". [3]
The rufous-backed dwarf kingfisher was formerly considered to be a colour morph of the black-backed dwarf kingfisher (Ceyx erithaca). The two species complex was known as the "oriental dwarf kingfisher". Molecular genetic studies have shown that Ceyx rufidorsa is a distinct taxon and that the polymorphism is the result of ancient introgression in which some genes from Ceyx erithaca were transferred to Ceyx rufidorsa around 140,000 years ago. [4] [5]
Five subspecies are recognised: [6]
The river kingfishers or pygmy kingfishers, subfamily Alcedininae, are one of the three subfamilies of kingfishers. The river kingfishers are widespread through Africa and east and south Asia as far as Australia, with one species, the common kingfisher also appearing in Europe and northern Asia. This group includes many kingfishers that actually dive for fish. The origin of the subfamily is thought to have been in Asia.
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The blue-eared kingfisher is found in Asia, ranging across the Indian subcontinent and Southeast Asia. It is found mainly in dense shaded forests where it hunts in small streams. It is darker crowned, with darker rufous underparts and lacking the rufous ear stripe of the common kingfisher which is found in more open habitats. A number of subspecies have been described that differ in measurement and colour shade. Adult males have an all dark bill while females have a reddish lower mandible.
The black-backed dwarf kingfisher, also known as the three-toed kingfisher, is a pocket-sized bird in the family Alcedinidae. It was formerly considered as conspecific with the rufous-backed dwarf kingfisher and together the species complex was known by the English name "oriental dwarf kingfisher".
The purple-naped spiderhunter or purple-naped sunbird is a species of bird in the family Nectariniidae. It is the only species in the genus Kurochkinegramma. It is found in Southeast Asia from Myanmar to Sumatra and Borneo. Its natural habitat is subtropical or tropical moist lowland forests.
Ceyx is an Old World genus of river kingfishers. These kingfishers are found from South East Asia to the Solomon Islands.
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Variable dwarf kingfisher is a common name of a group of kingfishers in the genus, Ceyx.
The dimorphic dwarf kingfisher is a species of bird in the family Alcedinidae that is endemic to the central and southern Philippines. Its natural habitat is subtropical or tropical moist lowland forests.
The Sula dwarf kingfisher, is a species of bird in the family Alcedinidae that is endemic to the Sula Islands in Indonesia. Its natural habitat is subtropical or tropical moist lowland forests. It was formerly considered to be a subspecies of the variable dwarf kingfisher.
The Buru dwarf kingfisher, is a species of bird in the family Alcedinidae that is endemic to Buru Island in Indonesia. Its natural habitat is subtropical or tropical moist lowland forests.
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The Manus dwarf kingfisher, is a species of bird in the family Alcedinidae that is endemic to the Admiralty Islands. Its natural habitat is subtropical or tropical moist lowland forests.
The New Ireland dwarf kingfisher, is a species of bird in the family Alcedinidae that is endemic to New Hanover Island, New Ireland and the Lihir Islands. Its natural habitat is subtropical or tropical moist lowland forests.
The New Britain dwarf kingfisher, is a species of bird in the family Alcedinidae that is endemic to New Britain and Umboi Island. Its natural habitat is subtropical or tropical moist lowland forests.
The North Solomons dwarf kingfisher, is a species of bird in the family Alcedinidae that is endemic to the west and central Solomon Islands. Its natural habitat is subtropical or tropical moist lowland forests.
The New Georgia dwarf kingfisher, is a species of bird in the family Alcedinidae that is endemic to the west central Solomon Islands. Its natural habitat is sub-tropical or tropical moist lowland forests.
The Guadalcanal dwarf kingfisher, is a species of bird in the family Alcedinidae that is endemic to Guadalcanal Island. Its natural habitat is sub-tropical or tropical moist lowland forests.
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