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Eurystomus
''Eurystomus'' is a genus of Coraciidae, roller, one of the two genera in that family of birds. The name means ‘broad mouth’, from the Greek ''eurus'' (, ‘broad, wide’) and ''stoma'' (, ‘mouth’). ''Eurystomus'' contains four broad-billed species, which breed in Africa, Asia and Australasia. Two species are restricted to Africa, one of which, the broad-billed roller, is bird migration, migratory. The oriental dollarbird has a large distribution ranging from India to Japan and Australia and it too, is migratory over the northern and southern extremes of its range. The final species, the azure dollarbird, is endemism, endemic to the Moluccas in Indonesia. In general they are open country foragers, occurring in woodland, savanna and farmland. The azure dollarbird and the broad-billed roller are both associated with rainforests but nevertheless require open areas in which to forage. The species of the genus ''Eurystomus'' vary from the other genus of rollers, ''Coracias'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dollarbird
The Oriental dollarbird (''Eurystomus orientalis'') is a bird of the roller family, so named because of the distinctive pale blue or white, coin-shaped spots on its wings. It can be found from Australia to Korea, Japan and India. Taxonomy The Oriental dollarbird was formally described by the Swedish naturalist Carl Linnaeus in 1766 in the twelfth edition of his ''Systema Naturae'' under the binomial name ''Coracias orientalis''. Linnaeus based his description on "Le Rollier des Indes" that had been described and illustrated by the French zoologist Mathurin Jacques Brisson in 1760. The type locality is the island of Java in Indonesia. The Oriental dollarbird is now placed in the genus '' Eurystomus'' that was introduced in 1816 by the French ornithologist Louis Pierre Vieillot. A molecular phylogenetic study published in 2018 found that the azure dollarbird (''Eurystomus azureus'') was nested in a clade containing subspecies of the Oriental dollarbird. Formerly, some authorit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coraciidae
Coraciidae () is a family of Old World birds, which are known as rollers because of the aerial acrobatics some of these birds perform during courtship or territorial flights. The family contains 13 species and is divided into two genera. Rollers resemble crows in size and build, and share the colourful appearance of kingfishers and bee-eaters, blues and pinkish or cinnamon browns predominating. The two inner front toes are connected, but not the outer one. They are mainly insect eaters, with ''Eurystomus'' species taking their prey on the wing, and those of the genus ''Coracias'' diving from a perch to catch food items from on the ground, like giant shrikes. Although living rollers are birds of warm climates in the Old World, fossil records show that rollers were present in North America during the Eocene. They are monogamous and nest in an unlined hole in a tree or in masonry, and lay 2–4 eggs in the tropics, 3–6 at higher latitudes. The eggs, which are white, hatch after 17 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oriental Dollarbird
The Oriental dollarbird (''Eurystomus orientalis'') is a bird of the roller family, so named because of the distinctive pale blue or white, coin-shaped spots on its wings. It can be found from Australia to Korea, Japan and India. Taxonomy The Oriental dollarbird was formally described by the Swedish naturalist Carl Linnaeus in 1766 in the twelfth edition of his ''Systema Naturae'' under the binomial name ''Coracias orientalis''. Linnaeus based his description on "Le Rollier des Indes" that had been described and illustrated by the French zoologist Mathurin Jacques Brisson in 1760. The type locality is the island of Java in Indonesia. The Oriental dollarbird is now placed in the genus ''Eurystomus'' that was introduced in 1816 by the French ornithologist Louis Pierre Vieillot. A molecular phylogenetic study published in 2018 found that the azure dollarbird (''Eurystomus azureus'') was nested in a clade containing subspecies of the Oriental dollarbird. Formerly, some authorities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broad-billed Roller
The broad-billed roller (''Eurystomus glaucurus'') is a member of the roller family of birds which breeds across tropical Africa and Madagascar in all but the driest regions. It is a wet season breeder, which migrates from the northern and southern areas of its range towards the moister equatorial belt in the dry season. Taxonomy The broad-billed roller was formally described in 1776 by the German zoologist Philipp Ludwig Statius Müller under the binomial name ''Coracias glaucurus''. The specific epithet is from Ancient Greek ''glaukos'' meaning "blue-grey". Statius Müller based his brief description on "Le Rollier de Madagascar" that had been described in 1775 by the French polymath Georges-Louis Leclerc, Comte de Buffon and illustrated by Edme-Louis Daubenton. The type locality is Madagascar. The broad-billed roller is now placed in the genus '' Eurystomus'' that was introduced in 1816 by the French ornithologist Louis Pierre Vieillot. A molecular phylogenetic study publis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azure Dollarbird
The azure dollarbird (''Eurystomus azureus'') also known as the azure roller, purple dollarbird or purple roller, is a species of bird in the family Coraciidae. It is endemic to North Maluku in Indonesia. Formerly, some authorities considered the azure dollarbird to be a subspecies of the oriental dollarbird. A molecular phylogenetic study by Ulf Johansson and collaborators published in 2018 found that the azure dollarbird was nested in a clade containing subspecies of the Oriental dollarbird (''Eurystomus orientalis''). Habitat The azure dollarbird's natural habitats are subtropical or tropical moist lowland forest and plantations. It is negatively affected by habitat loss. For some time, it was assumed to be decreasing in numbers quite rapidly and it was uplisted to Vulnerable in the 2000 IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue-throated Roller
The blue-throated roller (''Eurystomus gularis'') is a species of roller in the family Coraciidae. It is native to the African tropical rainforest. Taxonomy and systematics The blue-throated roller was formally described in 1819 by the French ornithologist Louis Pierre Vieillot under its current binomial name ''Eurystomus gularis''. The specific epithet ''gularis'' is Modern Latin meaning "-throated". Vieillot based his description on a specimen in the Muséum National d'Histoire Naturelle in Paris which he mistaken believed had been collected in "Australasie"; the type locality has been designated as Senegal. A molecular phylogenetic study published in 2018 found that the blue-throated roller was most closely related to the broad-billed roller (''Eurystomus glaucurus''). Two subspecies are recognized: * ''E. g. gularis'' - Vieillot, 1819: Found from Guinea to western Cameroon * ''E. g. neglectus'' - Neumann, 1908: Found from south-eastern Nigeria and southern Cameroon to no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coracias
''Coracias'' is a genus of the rollers, an Old World family of near passerine birds related to the kingfishers and bee-eaters. They share the colourful appearance of those groups, blues and browns predominating. The two outer front toes are connected, but not the inner one. Taxonomy The genus ''Coracias'' was introduced in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his ''Systema Naturae''. The genus name is from Ancient Greek ''korakías'' (), derived from ''korax'' (, ‘raven, crow’). Aristotle described the ''coracias'' as a bird as big as a crow with a red beak, which some believe to be the chough. The type species was designated as the European roller (''Coracias garrulus'') by George Robert Gray in 1855. Species Nine species are recognized: Former species Formerly, some authorities also considered the following species (or subspecies) as species within the genus ''Coracias'': * Olive-backed oriole (as ''Coracias sagi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
