Eastern marsh harrier

Last updated

Eastern marsh harrier
Circus spilotonus.jpg
An eastern marsh harrier at the Candaba Bird Sanctuary, Philippines
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Accipitriformes
Family: Accipitridae
Genus: Circus
Species:
C. spilonotus
Binomial name
Circus spilonotus
Kaup, 1847

The eastern marsh harrier (Circus spilonotus) is a bird of prey belonging to the marsh harrier group of harriers. It was previously considered to be conspecific with the western marsh harrier (Circus aeruginosus) but is now usually classified as a separate species. It has two subspecies: C. s. spilonotus in eastern Asia and C. s. spilothorax ( Papuan harrier , perhaps a separate species) in New Guinea.

Contents

Description

It is 48 to 58 cm long with a wingspan of 113 to 137 cm; like most birds of prey, the female is usually larger than the male. The male's plumage is variable; typically the head, breast, back and wing-coverts are blackish with pale streaks. The rest of the wing is grey with black wingtips and a white front edge. The tail is grey, the rump is white and the underparts are mostly white. The female is dark brown with buff streaking on the head and underparts. The rump is often whitish and the tail has dark bars. Young birds are dark brown with buff on the head and a pale patch on the underwing.

It is usually silent but has a mewing call which is most often uttered at roost sites.

Distribution and habitat

Eastern marsh harriers are generally migratory apart from the Papuan harrier which is sedentary. The breeding range covers north-east China, Mongolia and south-east Siberia (as far west as Lake Baikal) with small numbers in northern Japan (Hokkaidō and northern Honshū). There is some overlap with western marsh harrier around Lake Baikal and interbreeding has taken place.

The wintering range includes southern China, Taiwan, Korea, southern Japan, northeast India, Bangladesh and Southeast Asia as far south as the Philippines, Borneo and Sumatra. Large numbers of birds migrate along the Chinese coast with thousands passing through sites like Beidaihe during the autumn.

Its preferred habitat is open country including marshland, paddy fields and grassland.

Diet and reproduction

While hunting it flies low over the ground with the wings held in a shallow V-shape. Its prey includes small mammals, birds and frogs.

The breeding season begins in April. The nest is made of sticks and built on the ground, usually in a reedbed. Four to seven eggs are laid which are incubated for 33 to 48 days. The young birds fledge after 35 to 40 days.

Related Research Articles

<span class="mw-page-title-main">Desert wheatear</span> Species of bird

The desert wheatear is a wheatear, a small passerine bird that was formerly classed as a member of the thrush family Turdidae, but is now more generally considered to be an Old World flycatcher (Muscicapidae). It is a migratory insectivorous species, 14.5 to 15 cm in length. Both western and eastern forms of the desert wheatear are rare vagrants to western Europe. The western desert wheatear breeds in the Sahara and the northern Arabian peninsula. The eastern race is found in the semi-deserts of Central Asia and in winter in Pakistan and northeast Africa.

<span class="mw-page-title-main">Hen harrier</span> Species of bird

The hen harrier is a bird of prey. It breeds in Eurasia. The term "hen harrier" refers to its former habit of preying on free-ranging fowl.

<span class="mw-page-title-main">Montagu's harrier</span> Species of bird

Montagu's harrier (Circus pygargus) is a migratory bird of prey of the harrier family. Its common name commemorates the British naturalist George Montagu.

<span class="mw-page-title-main">Pallid harrier</span> Species of bird

The Pallid Harrier is a migratory bird of prey of the harrier subfamily. The scientific name is derived from the Ancient Greek. Circus is from kirkos, referring to a bird of prey named for its circling flight, probably the hen harrier and macrourus is "long-tailed", from makros, "long" and -ouros "-tailed".

<span class="mw-page-title-main">Marsh harrier</span> Group of birds

The marsh harriers are birds of prey of the harrier subfamily. They are medium-sized raptors and the largest and broadest-winged harriers. Most of them are associated with marshland and dense reedbeds. They are found almost worldwide, excluding only the Americas.

<span class="mw-page-title-main">Western marsh harrier</span> Species of bird

The western marsh harrier is a large harrier, a bird of prey from temperate and subtropical western Eurasia and adjacent Africa. It is also known as the Eurasian marsh harrier. Formerly, a number of relatives were included in C. aeruginosus, which was then known as "marsh harrier". The related taxa are now generally considered to be separate species: the eastern marsh harrier, the Papuan harrier of eastern Asia and the Wallacea, the swamp harrier of Australasia and the Madagascar marsh harrier of the western Indian Ocean islands.

<span class="mw-page-title-main">Red-rumped swallow</span> Species of bird

The red-rumped swallow is a small passerine bird in the swallow family. It breeds in open hilly country of temperate southern Europe and Asia from Portugal and Spain to Japan, India, Sri Lanka and tropical Africa. The Indian and African birds are resident, but European and other Asian birds are migratory. They winter in Africa or India and are vagrants to Christmas Island and northern Australia.

<span class="mw-page-title-main">Masked shrike</span> Migratory bird in the family Laniidae

The masked shrike is a species of bird in the shrike family, Laniidae. It breeds in southeastern Europe and at the eastern end of the Mediterranean, with a separate population in eastern Iraq and western Iran. It is migratory, wintering mainly in northeast Africa. Although it is a short-range migrant, vagrants have occurred widely elsewhere, including northern and western Europe. It is the smallest member of its genus, long-tailed and with a hooked bill. The male has mainly black upperparts, with white on its crown, forehead and supercilium and large white patches on the shoulders and wings. The throat, neck sides and underparts are white, with orange flanks and breast. The female is a duller version of the male, with brownish black upperparts and a grey or buff tone to the shoulders and underparts. The juvenile has grey-brown upperparts with a paler forehead and barring from the head to rump, barred off-white underparts and brown wings аpart from the white primary patches. The species' calls are short and grating, but the song has melodic warbler-like components.

<span class="mw-page-title-main">Tiger shrike</span> Species of bird

The tiger shrike or thick-billed shrike is a small passerine bird which belongs to the genus Lanius in the shrike family, Laniidae. It is found in wooded habitats across eastern Asia. It is a shy, often solitary bird which is less conspicuous than most other shrikes. Like other shrikes it is predatory, feeding on small animals. Its nest is built in a tree and three to six eggs are laid.

<span class="mw-page-title-main">Cinereous harrier</span> Species of bird

The cinereous harrier is a South American bird of prey of the harrier family. Its breeding range extends from the Tierra del Fuego through Argentina and Chile to Bolivia, Paraguay, Peru and southern Brazil; and across the Andes north to Colombia. The bird's population is declining but due to its large range is not considered vulnerable. The term cinereous, deriving from the Latin word for ashy, describes its colouration.

<span class="mw-page-title-main">Spotted harrier</span> Species of bird

The spotted harrier also known as the smoke hawk, is a large Australasian bird of prey belonging to the family Accipitridae.

<span class="mw-page-title-main">Papuan harrier</span> Species of bird

The Papuan harrier is a bird of prey native to New Guinea which belongs to the harrier genus Circus. It was classified as a subspecies of the eastern marsh harrier of eastern Asia.

<span class="mw-page-title-main">Malagasy harrier</span> Species of bird

The Malagasy harrier is a bird of prey belonging to the marsh harrier group of harriers. It inhabits Madagascar and the Comoro Islands in the Indian Ocean. It was formerly regarded as a subspecies of the Réunion harrier but is increasingly treated as a separate species. It is also known as the Madagascar harrier, Madagascar marsh harrier or Malagasy marsh harrier.

<span class="mw-page-title-main">Réunion harrier</span> Species of bird

The Réunion harrier, also known as Réunion marsh harrier, is a species of bird of prey belonging to the marsh harrier group of harriers. It is now found only on the Indian Ocean island of Réunion, although fossil material from Mauritius has been referred to this species. It is known locally as the papangue or pied jaune. The Malagasy harrier of Madagascar and the Comoro Islands was previously treated as a subspecies of this bird but is increasingly regarded as a separate species. The Réunion harrier appears to be declining in numbers and it is classed as an endangered species.

<span class="mw-page-title-main">African marsh harrier</span> Species of bird

The African marsh harrier is a bird of prey belonging to the harrier genus Circus. It is largely resident in wetland habitats in southern, central and eastern Africa from South Africa north to South Sudan.

<span class="mw-page-title-main">Asian house martin</span> Species of bird

The Asian house martin is a migratory passerine bird of the swallow family Hirundinidae. It has mainly blue-black upperparts, other than its white rump, and has pale grey underparts. Its three subspecies breed in the Himalayas and in central and eastern Asia, and spend the winter lower in the mountains or in Southeast Asia. This species is locally abundant and is expanding northward in Siberia, so there are no concerns about its conservation status.

<span class="mw-page-title-main">Dark-sided flycatcher</span> Species of bird

The dark-sided flycatcher is a small passerine bird belonging to the genus Muscicapa in the Old World flycatcher family Muscicapidae. It has a wide breeding distribution in the East Palearctic with northern birds migrating south for the winter. It is also known as the Siberian flycatcher or sooty flycatcher, the latter name is also used for the sooty flycatcher of Africa.

<span class="mw-page-title-main">Eversmann's redstart</span> Species of bird

Eversmann's redstart, also known as the rufous-backed redstart, is a passerine bird belonging to the genus Phoenicurus. It was formerly classified in the thrush family Turdidae but is now placed in the Old World flycatcher family Muscicapidae. It was described by the German biologist Eduard Friedrich Eversmann who is commemorated in the bird's English name.

<span class="mw-page-title-main">Oriental reed warbler</span> Species of bird

The Oriental reed warbler is a passerine bird of eastern Asia belonging to the reed warbler genus Acrocephalus. It was formerly classified as a subspecies of the great reed warbler of the western Palearctic.

<span class="mw-page-title-main">Oriental cuckoo</span> Species of bird

The Oriental cuckoo or Horsfields cuckoo is a bird belonging to the genus Cuculus in the cuckoo family Cuculidae. It was formerly classified as a subspecies of the Himalayan cuckoo, with the name 'Oriental cuckoo' used for the combined species. Differences in voice and size suggest that it should be treated as a separate species. The binomial name Cuculus horsfieldi has often been used instead of Cuculus optatus, but is now usually considered to be a junior synonym.

References

  1. BirdLife International (2016). "Circus spilonotus". The IUCN Red List of Threatened Species . IUCN. 2016: e.T61709141A95177565. doi: 10.2305/IUCN.UK.2016-3.RLTS.T61709141A95177565.en . Retrieved 14 January 2018.