Australian mudnesters | |
---|---|
White-winged chough (Corcorax melanorhamphos) | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Superfamily: | Corvoidea |
Family: | Corcoracidae Mathews 1927 |
Species | |
Synonyms | |
Struthideidae Mathews 1924 |
Corcoracidae is a family of passerine birds known as the Australian mudnesters. The family has sometimes been called Struthideidae in the past; however, despite Struthideidae being an older name than Corcoracidae, the latter name takes precedence. [1] It contains just two species in two genera, the white-winged chough (Corcorax melanorhamphos) and the apostlebird (Struthidea cinerea). Both are endemic to Australia. [2]
Both the Australian mudnesters are found in open habitat in eastern Australia, mostly open eucalypt woodlands and some forest that lacks a closed canopy. The apostlebird is more tolerant of arid habitats and is found in arid woodland and shrublands. Both species are tolerant of human modified habitats and will occupy farmlands and suburban areas, and even parks and gardens. [2]
The two mudnesters are medium-sized passerines, the apostlebird being smaller at around 31 centimetres (12 in) in length and the larger white-winged chough averaging 47 centimetres (19 in). Their morphology is typical of ground feeding passerines, with long legs and short, rounded wings. The most noticeable differences between the two species are in the plumage (grey with brown wings and a black tail in the apostlebird, and black with white wing patches in the white-winged chough) and bill shape. [2] The bill of the apostlebird is short and deep, not unlike that of a finch, whereas the bill of the white-winged chough is long and curved, not unlike that of its Old World namesakes, the choughs. The differences in the bills reflect the differences in feeding ecology, with the apostlebirds using theirs for sparrow-like picking whereas the white-winged chough uses its bill to flick leaf litter around. [3]
In the field, the relationship between the two species is immediately apparent: both species are highly social, spending much of their time foraging through leaf litter with a very distinctive gait, calling to one another almost constantly. Both species respond to a human interloper by flying heavily to a nearby tree, where they wait for the disturbance to pass, often perching close together in twos and threes and allopreening. In picnic grounds and parks these birds may become accustomed to humans and become very tame. [2]
The social groups of mudnesters are based around a dominant male and female. The number of birds in the group may vary from two to twenty birds, six birds being typical in the white-winged chough and seven to nine birds in the apostlebird. Both species are non migratory and defend a territory during the breeding season. The size of the territory during the breeding season is around 20 ha, after the breeding season when the chicks are fledged the group may range over a larger territory. On the death of one of the dominant breeders the groups break up, and the remaining dominant bird will take immatures from their group and find a lone bird to form a new group. [2] The majority of recruits into any group after its establishment are youngsters from previous breeding seasons. [4] These helpers are important in breeding success, so much so that white-winged choughs have been reported to kidnap nearly fledged chicks from other groups in order to increase the size of the kidnapping group. [5]
As the common name of the family suggests, the nests are constructed out of mud. These bowl shaped nests take several days to construct, longer if supplies of mud dry up before the nest is finished. nests are built opportunistically when rain causes muddy puddles, and may be reused if possible. Around three to five oval eggs are laid in each clutch. These eggs are incubated for around twenty days by all members of the group, and feeding and brooding duties are also shared within the group. [2] This family has a very long period of fledgling care, with full independence from the parents and helpers taking up to 200 days. [6]
The red-billed chough, Cornish chough or simply chough, is a bird in the crow family, one of only two species in the genus Pyrrhocorax. Its eight subspecies breed on mountains and coastal cliffs from the western coasts of Ireland and Britain east through southern Europe and North Africa to Central Asia, India and China.
The Alpine Chough, or yellow-billed chough is a bird in the crow family, one of only two species in the genus Pyrrhocorax. Its two subspecies breed in high mountains from Spain eastwards through southern Europe and North Africa to Central Asia and Nepal, and it may nest at a higher altitude than any other bird. The eggs have adaptations to the thin atmosphere that improve oxygen take-up and reduce water loss.
The white-winged chough is one of only two surviving members of the Australian mud-nest builders family, Corcoracidae, and is the only member of the genus Corcorax. It is native to southern and eastern Australia and is an example of convergent evolution as it is only distantly related to the European choughs that it closely resembles in shape, and for which it was named.
Pardalotes are a family, Pardalotidae, of very small, brightly coloured birds native to Australia, with short tails, strong legs, and stubby blunt beaks. This family is composed of four species in one genus, Pardalotus, and several subspecies. The name derives from a Greek word meaning "spotted". The family once contained several other species now split into the family Acanthizidae.
The white-bellied sea eagle, also known as the white-breasted sea eagle, is a large diurnal bird of prey in the family Accipitridae. Originally described by Johann Friedrich Gmelin in 1788, it is closely related to Sanford's sea eagle of the Solomon Islands, and the two are considered a superspecies. A distinctive bird, the adult white-bellied sea eagle has a white head, breast, under-wing coverts and tail. The upper parts are grey and the black under-wing flight feathers contrast with the white coverts. The tail is short and wedge-shaped as in all Haliaeetus species. Like many raptors, the female is slightly larger than the male, and can measure up to 90 cm (35 in) long with a wingspan of up to 2.2 m (7.2 ft), and weigh 4.5 kg (9.9 lb). Immature birds have brown plumage, which is gradually replaced by white until the age of five or six years. The call is a loud goose-like honking.
The swallows, martins, and saw-wings, or Hirundinidae, are a family of passerine birds found around the world on all continents, including occasionally in Antarctica. Highly adapted to aerial feeding, they have a distinctive appearance. The term "swallow" is used colloquially in Europe as a synonym for the barn swallow. Around 90 species of Hirundinidae are known, divided into 19 genera, with the greatest diversity found in Africa, which is also thought to be where they evolved as hole-nesters. They also occur on a number of oceanic islands. A number of European and North American species are long-distance migrants; by contrast, the West and South African swallows are nonmigratory.
There are two species of passerine birds commonly called chough that constitute the genus Pyrrhocorax of the Corvidae (crow) family of birds. These are the red-billed chough, and the Alpine chough. The white-winged chough of Australia, despite its name, is not a true chough but rather a member of the family Corcoracidae and only distantly related.
The superb fairywren is a passerine bird in the Australasian wren family, Maluridae, and is common and familiar across south-eastern Australia. It is a sedentary and territorial species, also exhibiting a high degree of sexual dimorphism; the male in breeding plumage has a striking bright blue forehead, ear coverts, mantle, and tail, with a black mask and black or dark blue throat. Non-breeding males, females and juveniles are predominantly grey-brown in colour; this gave the early impression that males were polygamous, as all dull-coloured birds were taken for females. Six subspecies groups are recognized: three larger and darker forms from Tasmania, Flinders and King Island respectively, and three smaller and paler forms from mainland Australia and Kangaroo Island.
The monarchs comprise a family of over 100 passerine birds which includes shrikebills, paradise flycatchers, and magpie-larks.
The apostlebird, also known as the grey jumper, lousy jack, happy jack, awky squawky or caw bird is a quick-moving, gray or black bird about 33 cm (13 in) long. It is a native to Australia where it roams woodlands, eating insects and seeds at, or near, ground level. Apostlebirds often travel in groups of about 12; for this reason they were named after the Biblical apostles, the twelve chief followers of Jesus Christ.
The blue swallow is a small bird within the swallow family which is in the order Passeriformes. Swallows are somewhat similar in habits and appearance to other aerial insectivores, such as the martins and the swifts. It breeds in the Afromontane, wintering north of Lake Victoria.
The scarlet robin is a common red-breasted Australasian robin in the passerine bird genus Petroica. The species is found on continental Australia and its offshore islands, including Tasmania. The species was originally split in 1999 by Schodde and Mason, and as the original collection by Gmelin was from Norfolk Island, this retained the name of multicolor, and is now known as the Norfolk robin.
The white-plumed honeyeater is a small passerine bird endemic to Australia. White-plumed honeyeaters are common around water and are often seen in backyards and suburbs with vegetation cover.
The yellow-faced honeyeater is a small to medium-sized bird in the honeyeater family, Meliphagidae. It takes its common and scientific names from the distinctive yellow stripes on the sides of its head. Its loud, clear call often begins twenty or thirty minutes before dawn. It is widespread across eastern and southeastern Australia, in open sclerophyll forests from coastal dunes to high-altitude subalpine areas, and woodlands along creeks and rivers. Comparatively short-billed for a honeyeater, it is thought to have adapted to a diet of flies, spiders, and beetles, as well as nectar and pollen from the flowers of plants, such as Banksia and Grevillea, and soft fruits. It catches insects in flight as well as gleaning them from the foliage of trees and shrubs.
The swift parrot is a species of broad-tailed parrot, found only in southeastern Australia. The species breeds in Tasmania during the summer and migrates north to south eastern mainland Australia from Griffith-Warialda in New South Wales and west to Adelaide in the winter. It is a nomadic migrant, and it settles in an area only when there is food available.
The striped honeyeater is a passerine bird of the honeyeater family, Meliphagidae, found in Australia. It is a medium-sized honeyeater, about 23 centimetres (9.1 in) in length. Both sexes are a light greyish brown with dark brown centres to the feathers, which give the appearance of stripes. The stripes are particularly distinct on the head and back of the neck. While it is found mainly in inland eastern Australia where it inhabits the drier open forest, it is also found in coastal swamp forest from southeast Queensland to the central coast of New South Wales.
The white-winged fairywren is a species of passerine bird in the Australasian wren family, Maluridae. It lives in the drier parts of Central Australia; from central Queensland and South Australia across to Western Australia. Like other fairywrens, this species displays marked sexual dimorphism and one or more males of a social group grow brightly coloured plumage during the breeding season. The female is sandy-brown with light-blue tail feathers; it is smaller than the male, which, in breeding plumage, has a bright-blue body, black bill, and white wings. Younger sexually mature males are almost indistinguishable from females and are often the breeding males. In spring and summer, a troop of white-winged fairywrens has a brightly coloured older male accompanied by small, inconspicuous brown birds, many of which are also male. Three subspecies are recognised. Apart from the mainland subspecies, one is found on Dirk Hartog Island, and another on Barrow Island off the coast of Western Australia. Males from these islands have black rather than blue breeding plumage.
The melampittas are a family, Melampittidae, of New Guinean birds containing two enigmatic species. The two species are found in two genera, the greater melampitta in the genus Megalampitta and the lesser melampitta in the genus Melampitta. They are little studied and before being established as a family in 2014 their taxonomic relationships with other birds were uncertain, being considered at one time related variously to the pittas, Old World babblers and birds-of-paradise.
The white-browed babbler is a small, gregarious species of bird in the family Pomatostomidae. They are endemic to the open woodlands and shrubby areas of central and southern Australia. The Latin name superciliosus refers to the supercilium or ‘eyebrow’, which is a feature synonymous with the pomatostomine babblers.