Scaly ground roller | |
---|---|
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Coraciiformes |
Family: | Brachypteraciidae |
Genus: | Geobiastes Sharpe, 1871 |
Species: | G. squamiger |
Binomial name | |
Geobiastes squamiger (Lafresnaye, 1838) | |
Synonyms [2] [3] [4] | |
The scaly ground roller (Geobiastes squamiger) is a species of bird in a monotypic genus in the near-passerine family Brachypteraciidae. It is endemic to eastern Madagascar. Its natural habitat is subtropical or tropical moist lowland forest. The scaly ground roller is found at elevations below 1,000 meters (3,300 ft ), and one of the few birds of Madagascar to reside in lowland rainforest. [1]
Scaly ground rollers grow to between 27 and 31 cm (11 and 12 in ). The head is covered with a black and white scaly pattern. It is a copper brown color and has green wings, with white tips. The center of the tail is reddish-brown, and has blue tips and black marks. The underside is pale, with black crescents. Its gray bill is thick and long, and its legs are pink in color. [5]
The diet of the scaly ground roller mostly consists of invertebrates it collects from the ground but it does also eat vertebrates it can find. It has been reported to chiefly eat earthworms ( Pheretima sp.) and centipedes ( Scolopendra morsitons ), but spiders, frogs, lizards ( Zonosaurus sp. and Phelsuma sp.), and tenrecs ( Microgale sp.) have also been reported to be eaten by the ground roller. [6]
Nesting occurs in small burrows, ranging from 6.5 to 10 cm (2.6–3.9 in) wide and 55 to 77 cm (22–30 in) deep. The nests are generally found near sources of water and where there's great herbaceous ground coverage. The scaly ground roller lays its eggs from mid-October to early November, with a clutch size of one egg. Incubation is conducted solely by the female for a period of 18 days. During brooding, the female generally will remain with the egg while a male brings food to the nest. Both parents provide food for their young after hatching. [6]
This species taxon has been referred to by several other synonymous names until recently, including the following binomial names:
Until the 2000s, the taxon was called Brachypteracias squamigera, in the genus Brachypteracias . The scaly ground roller, Geobiastes squamiger, is in the monotypic genus Geobiastes, however was originally placed in the genus Brachypteracias in 1838 by Frédéric de Lafresnaye. [3] The species was moved to Geobiastes to reflect its unclear phylogenetic relationship with the sister taxon to its family Brachypteraciidae, Brachypteracias leptosomus . [7] The scaly ground roller also has a different tarsometatarsus to hallux measurement ratio compared to the genera Brachypteracias, Uratelornis , and Atelornis , where the scaly ground roller has a smaller ratio (2.8) compared to the other genera (4.5). An enlarged tarsometatarsus may be a derived character in the family Brachypteraciidae. [8]
The generic name comes from Greek γη (gē) 'ground',andβιαστης (biastēs) 'mighty, one who uses force'. Its specific epithet "squamiger" means "scale-bearing" in Latin, deriving from Latin squama 'scale',and -gera 'carrying'. [9]
The scaly ground roller is threatened by habitat loss and is considered by IUCN to be a vulnerable species. [1] Although threatened by removal of its ecological niche, it is more resilient to climate change and forest conversion effects than other similar species. Climate change can result in further loss of its habitat. It may also face risks from human hunters and domesticated dogs. [5] [10]
The ground rollers are a small family of non-migratory near-passerine birds restricted to Madagascar. They are related to the kingfishers, bee-eaters and rollers. They most resemble the latter group, and are sometimes considered a sub-family of the true rollers.
The spotted sandpiper is a small shorebird. Together with its sister species the common sandpiper, it makes up the genus Actitis. They replace each other geographically; stray birds may settle down with breeders of the other species and hybridize.
The genus Dendragapus contains two closely related species of grouse that have often been treated as a single variable taxon. The two species are the dusky grouse and the sooty grouse. In addition, the spruce grouse and Siberian grouse have been considered part of this genus.
The Calayan rail is a flightless bird of the rail, moorhen, and coot family (Rallidae) that inhabits Calayan Island in the Philippines. It is the only member of the genus Aptenorallus. Though well known to natives of the island as the "piding", it was first observed by ornithologist Carmela Española in May 2004 and the discovery was officially announced on August 16, 2004. The formal description as a species new to science appeared in the journal Forktail.
The Madagascar lowland forests or Madagascar humid forests are a tropical moist broadleaf forest ecoregion found on the eastern coast of the island of Madagascar, home to a plant and animal mix that is 80 to 90% endemic, with the forests of the eastern plain being a particularly important location of this endemism. They are included in the Global 200 list of outstanding ecoregions.
The California thrasher is a large member of family Mimidae found primarily in chaparral habitat in California and Baja California. It is the only species of Toxostoma throughout most of its range.
The subdesert mesite is a ground-dwelling bird endemic to Madagascar. It is one of three species in the mesite family Mesitornithidae, and is restricted in distribution to a small low-land region in southwest Madagascar.
The pearly-eyed thrasher is a bird in the thrasher family Mimidae. It is found on many Caribbean islands, from the Bahamas in the north to the Grenadines in the south, with an isolated subspecies on Bonaire.
The Malagasy turtle dove or Madagascar turtle dove is a bird species in the pigeon and dove family, Columbidae. It is found in Mauritian-Indian Ocean Territory, the Comoros, Madagascar, Mauritius, Mayotte, Réunion, and the Seychelles.
Atelornis is a small genus of birds in the ground-roller family Brachypteraciidae. The genus is endemic to Madagascar.
The short-legged ground roller is a species of bird in the ground roller family Brachypteraciidae. It is the only living species in the genus Brachypteracias and is endemic to Madagascar. It is threatened by habitat loss.
Brachypteracias is a small genus of birds in the ground-roller family Brachypteraciidae. The genus is endemic to Madagascar.
The oriental dwarf kingfisher, also known as the black-backed kingfisher or three-toed kingfisher, is a pocket-sized bird in the family Alcedinidae. This tropical kingfisher is a partial migrant that is endemic across much of the Indian Subcontinent and Southeast Asia. It resides in lowland forests, typically near streams or ponds, where it feeds upon insects, spiders, worms, crabs, fish, frogs, and lizards. This small bird is easily distinguishable from other birds in its range due to its red bill, yellow-orange underparts, lilac-rufous upperparts, and blue-black back.
The long-tailed ground roller is a species of bird in the ground roller family Brachypteraciidae, placed in the monotypic genus Uratelornis. Endemic to arid spiny forests near the coast in southwestern Madagascar, this ground roller occurs at extremely low population densities throughout its habitat. This species requires shade and a deep layer of leaves on the ground, and it is absent from parts of the spiny forest lacking these features. It has no recognized subspecies, and its closest relative is the scaly ground roller. The long-tailed ground roller is the only ground roller to definitively display sexual dimorphism. It is a medium-sized bird with a plump silhouette and a long tail. The upperparts are dark brown with black streaks while the underparts are light gray. The white throat is framed by black malar stripes and a black breastband, and a white stripe is present at the base of the bill. Sky-blue feathers are visible at the edge of the wings and the tail. Calls are rarely made outside the breeding season, though multiple courtship calls are made.
The Cuban green woodpecker is a species of woodpecker in the family Picidae and tribe Melanerpini, known locally in Cuban Spanish as carpintero verde. It is the only species within the genus Xiphidiopicus and is one of two woodpeckers endemic to Cuba. It is the most widespread and common woodpecker in Cuba, inhabiting primarily woodlands, as well as dry and wet forests, pine forests and mangroves. The population of the Cuban green woodpecker is stable and its status is listed as "Least Concern".
The rufous-headed ground roller is a species of bird in the ground roller family, Brachypteraciidae. It is endemic to Madagascar. There are currently five known species of ground rollers. Four of these species live in the eastern and central highland humid forests. Unlike the four other species, the fifth species lives in the dry southwestern spiny bushes of Madagascar. The Atelornis crossleyi species of the ground rollers lives with most of its family in humid forests. The International Union for Conservation of Nature considers the bird to be near-threatened because, although it is present in a number of protected areas, it is hunted for food and the forests in which it lives are threatened by slash-and-burn cultivation. The bird's scientific name commemorates Alfred Crossley who collected mammals, birds, butterflies and moths in Madagascar and Cameroon in the 1860s and 1870s. Many of these are in the Natural History Museum, London.
Zahamena National Park is a national park of Madagascar. Established in 1997, it covers an area of 423 square kilometres (163.32 sq mi) out of a total protected area of 643 square kilometres (248.26 sq mi). It is part of a UNESCO World Heritage Site, Rainforests of the Atsinanana, inscribed in 2007 and consisting of 13 specific areas located within eight national parks in the eastern part of Madagascar. In 2001, Bird Life International assessed avifauna of 112 species of which 67 species are exclusively endemic to Madagascar.
The saltmarsh sparrow is a small New World sparrow found in salt marshes along the Atlantic coast of the United States. At one time, this bird and the Nelson's sparrow were thought to be a single species, the sharp-tailed sparrow. Because of this, the species was briefly known as the "saltmarsh sharp-tailed sparrow." Saltmarsh sparrow numbers are declining due to habitat loss largely attributed to human activity.
Tsitongambarika is a lowland forest in the north of Fort-Dauphin, village Iabakoho, Anosy in southern Madagascar. The area supports many rare species of amphibians, birds, lemurs and reptiles; many of which are endemic. In 2001, the site was designated as an Important Bird Area by BirdLife International and in 2015, an area of 600 km² received environmental protection by the government. The reserve is the recipient of monies raised by the 2016 Rutland Birdfairin.
The Ampoza ground roller was a species of bird in the ground roller family Brachypteraciidae. It is known only from a single humerus fossil discovered in 1929 in southwest Madagascar. Little is known about the species, but it is suggested that the bird's habitat becoming more arid was a contributing factor in its demise.