The rufous-headed ground roller (''Atelornis crossleyi'') is a species of
bird
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...
in the ground roller family,
Brachypteraciidae
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 o ...
. It is
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...
to
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...
. 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
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natur ...
considers the bird to be
near-threatened
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify fo ...
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
Slash-and-burn agriculture is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed veget ...
cultivation.
The bird's scientific name commemorates
Alfred Crossley who collected mammals, birds, butterflies and moths in Madagascar and
Cameroon
Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west- central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; th ...
in the 1860s and 1870s. Many of these are in the
Natural History Museum, London
The Natural History Museum in London is a museum that exhibits a vast range of specimens from various segments of natural history. It is one of three major museums on Exhibition Road in South Kensington, the others being the Science Museum ...
.
Description
The sexes are similar in this distinctively-coloured bird about long. The head and breast are reddish-brown, the upper parts olive green and the underparts buff with darker markings. There is a narrow blackish collar with white vertical streaks on the upper breast and an iridescent light blue patch on the carpal wing joint. The tail is short and the beak and legs are grey.
Distribution and habitat
The rufous-headed ground roller is
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...
to eastern Madagascar where it is found in
montane evergreen rain forests at altitudes between , but is most common between . Although present in most mountain regions, it is absent from
Montagne d'Ambre
Montagne d'Ambre National Park is a national park in the Diana Region of northern Madagascar. The park is known for its endemic flora and fauna, water falls and crater lakes. It is north of the capital, Antananarivo and is one of the most biolog ...
in the far north of the island.
Ecology
The rufous-headed ground roller is terrestrial and feeds amongst dense vegetation on the ground, taking a range of prey, particularly insects such as ants, beetles and their larvae, caterpillars, butterflies and cockroaches.
[ It nests in a burrow up to deep in an earth bank. Breeding probably takes place in December and January, and the clutch size is normally two eggs.]
References
External links
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{{Taxonbar, from=Q941142
rufous-headed ground roller
Endemic birds of Madagascar
rufous-headed ground roller
Taxa named by Richard Bowdler Sharpe