Black-eared cuckoo

Last updated

Black-eared cuckoo
Chrysococcyx osculans - Glen Davis.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Cuculiformes
Family: Cuculidae
Genus: Chrysococcyx
Species:
C. osculans
Binomial name
Chrysococcyx osculans
(Gould, 1847)
Synonyms

Chalcites osculans

The black-eared cuckoo (Chrysococcyx osculans) is a species of cuckoo in the family Cuculidae. Found across Australia, it migrates to eastern Indonesia and southern New Guinea. They are usually observed by themselves or in a pair [2] as they don't raise their own young, [3] rather they leave eggs in another species nest to be raised by host. [4]

Contents

Description

Adult weight on average 30 grams (1.1 oz) [2] and are 19 to 20 cm (7.5 to 7.9 in) long, [5] with dull greyish-brown back with distinctive black eye-stripe [6] from the bill to the neck. [7] Rump is pale white and breasts area is pale salmon in colour. [8] Feet and legs are black, eyes are brown, bill is black [6] tail is grey/brown on top, with white tips, while underneath the tail is cream with brownish bars. [6] What distinguishes it from other small sized cuckoo species in Australia is that it doesn't have a metallic coloured feathers on its back. [9]

Juveniles are duller in colour with a more brown eye-stripe. [5]

Range

Common in most areas of Australia except wet coastal forested areas, [10] basically inland side of great dividing range in Victoria, New South Wales and Queensland. Vagrants found in Tasmania. [10] [11] Breeds in southern Australia below 23rd parallel south [10] some birds will stay in southern Australia during winter, while many will migrate to Northern Australia and further north into Indonesia and PNG, [11]

Habitat

Dry open forests, [5] scrublands, mallee, mulga, lignum, saltbush and riverside thickets. [10] [11] They prefers to fly direct between low trees and shrubs, rather than large trees, and are rare in subhumid areas. [10]

Voice

Chicks will give a chirp, [12] while in adults a descending feeeuw [5] or pee-o-weer [8] call in a lower mournful [5] tone than the Horsfield's bronze cuckoo, [12] which maybe a singular or repeated. [5] During courtship a call of pee-o-wit may be also heard. [12] Males are often are observed calling from high branches but can still be found on lower branches [3]

Diet

They feed on beetles, diptera, hemiptera, insects, sandflies [10] and have been observed eating hairy caterpillars. [6] Majority of food is obtained on the ground but they have been observed foraging in trees and shrubs. [3]

Breeding Behaviour

Season

Breeding season varies depending on rain and location in Australia, generally the drier inland starts earlier in the year. In the west breeding starts earlier in the year around June, while in the east it can be later in August, with season finishing in October in the west and December in the east. [12] During courtship, females and males will call to each other, with females starting loud and then quieting down as males approach, males will feed females during courtship. [12]

Eggs

As a brood parasitic species, they lay one [13] dark brown egg in enclosed or domed shaped nests of passerine [14] bird species. In particular studies have shown it prefers to target speckled warbler and redthroat birds. [15] Eggs have also been found in nests of fieldwrens, thornbills, scrubwrens and heathwrens [16]

Often a female black-eared cuckoo will remove one host eggs when replacing it with its own. [3] These eggs are coloured and sized to mimic the hosts eggs, [17] often the eggs are so well mimicked, that they can only be identified apart by rubbing the egg to remove the brown pigmentation. [15] Therefore, hatchings are raised by host species, [3] with speckled warblers having been observed feeding black-eared cuckoo chicks. [18] After at least 18-day, the chick will leave its hosts nest. [3]

Related Research Articles

<span class="mw-page-title-main">Cuckoo</span> Family of birds

Cuckoos are birds in the Cuculidae family, the sole taxon in the order Cuculiformes. The cuckoo family includes the common or European cuckoo, roadrunners, koels, malkohas, couas, coucals, and anis. The coucals and anis are sometimes separated as distinct families, the Centropodidae and Crotophagidae, respectively. The cuckoo order Cuculiformes is one of three that make up the Otidimorphae, the other two being the turacos and the bustards. The family Cuculidae contains 150 species, which are divided into 33 genera.

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

The common cuckoo is a member of the cuckoo order of birds, Cuculiformes, which includes the roadrunners, the anis and the coucals.

<span class="mw-page-title-main">Brood parasitism</span> Subclass of parasitism, phenomenon that an animal relies on other inidivids to raise its young.

Brood parasitism is a subclass of parasitism and phenomenon and behavioural pattern of certain animals, brood parasites, that rely on others to raise their young. The strategy appears among birds, insects and fish. The brood parasite manipulates a host, either of the same or of another species, to raise its young as if it were its own, usually using egg mimicry, with eggs that resemble the host's.

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

Cuculus saturatus, better well known as the Himalayan cuckoo, is a brooding parasitic bird that is part of the Cuculidae family. The species breeds from the Himalayas eastward to southern China and Taiwan. It migrates to southeast Asia and the Greater Sunda Islands for the winter.

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

The weebill is a species of bird in the family Acanthizidae. It is an insectivorous passerine that is found throughout mainland Australia. At 8 to 9 cm long, it is Australia's smallest bird. It was originally described by John Gould in 1838, and four subspecies are recognised. The weebill's plumage is nondescript, with olive-grey upperparts and paler, more yellowish underparts. It grades from more brownish plumage in the southern regions of Australia to more yellow in tropical areas.

<span class="mw-page-title-main">Koel</span> Genus of birds

The true koels, Eudynamys, are a genus of cuckoos from Asia, Australia and the Pacific. They are large sexually dimorphic cuckoos that eat fruits and insects and have loud distinctive calls. They are brood parasites, laying their eggs in the nests of other species.

<span class="mw-page-title-main">Little grassbird</span> Species of bird

The little grassbird is a species of Old World warbler in the family Locustellidae. It is found in Australia and in West Papua, Indonesia. These sexually monomorphic birds are found in reed beds, rushes, lignum swamps and salt marshes of Southeastern Australia.

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

The pipipi, also known as brown creeper, New Zealand creeper or New Zealand titmouse, is a small passerine bird endemic to the South Island of New Zealand. They are specialist insectivores, gleaning insects from branches and leaves. They have strong legs and toes for hanging upside down while feeding.

<span class="mw-page-title-main">Horsfield's bronze cuckoo</span> Species of bird

Horsfield's bronze cuckoo is a small cuckoo in the family Cuculidae. Its size averages 22g and is distinguished by its green and bronze iridescent colouring on its back and incomplete brown barring from neck to tail. Horsfield's bronze cuckoo can be destiguished from other bronze cuckoos by its white eyebrow and brown eye stripe. The Horsfield's bronze cuckoo is common throughout Australia preferring the drier open woodlands away from forested areas.

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

The shining bronze cuckoo is a species of cuckoo in the family Cuculidae, found in Australia, Indonesia, New Caledonia, New Zealand, Papua New Guinea, Solomon Islands, and Vanuatu. It was previously also known as Chalcites lucidus.

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

The violet cuckoo is a species of cuckoo in the family Cuculidae.

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

The pallid cuckoo is a species of cuckoo in the family Cuculidae. It is found in Australia, with some migration to the islands of Timor and Papua New Guinea. It is between 28 and 33 cm in size, with distinctive markings such as a dark bill, a dark eye with a gold eye-ring and olive grey feet which differentiate it from other cuckoos. The pallid cuckoo is similar in appearance to the oriental cuckoo, with barred immature pallid cuckoos being often mistaken for oriental cuckoos.

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

The channel-billed cuckoo is a species of cuckoo in the family Cuculidae. It is monotypic within the genus Scythrops. The species is the largest brood parasite in the world, and the largest cuckoo.

<span class="mw-page-title-main">Striated grasswren</span> Species of bird

The striated grasswren is a small, cryptically coloured ground-dwelling species of wren-like bird in the family Maluridae, endemic to Australia. It occupies a large discontinuous range across arid and semi-arid areas of western, central and southern Australia where it is associated with spinifex (Triodia) grass.

<span class="mw-page-title-main">Rufous fieldwren</span> Species of bird

The rufous fieldwren also known as the desert wren or sandplain wren is a species of insectivorous bird in the family Acanthizidae, endemic to Australia.

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

The speckled warbler is a species of bird in the family Acanthizidae. It is endemic to eastern Australia. Its natural habitat is temperate forests.

<span class="mw-page-title-main">Chatham gerygone</span> Species of bird

The Chatham gerygone or Chatham Island warbler is a species of bird in the family Acanthizidae. It is endemic to the Chatham Islands. The Chatham Island warbler is larger than and differs in plumage from the related grey warbler of mainland New Zealand. Both warblers were discovered and named by G. R. Gray in 1845. The grey and Chatham Island warblers are the only two members of the Australasian family Acanthizidae found in New Zealand.

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

The redthroat is a small, mostly ground-dwelling species of bird in the family Acanthizidae. It is endemic to Australia, occurring mostly in arid and semi-arid areas containing acacia and chenopod shrublands. The species has a distinctive red throat patch and is able to mimic the calls of numerous other bird species.

<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.

<span class="mw-page-title-main">Egg tossing (behavior)</span>

Egg tossing or egg destruction is a behavior observed in some species of birds where one individual removes an egg from the communal nest. This is related to infanticide, where parents kill their own or other's offspring. Egg tossing is observed in avian species, most commonly females, who are involved with cooperative breeding or brood parasitism. Among colonial non-co-nesting birds, egg-tossing is observed to be performed by an individual of the same species, and, in the case of brood parasites, this behavior is done by either the same or different species. The behavior of egg tossing offers its advantages and disadvantages to both the actor and recipient.

References

  1. BirdLife International (2016). "Chalcites osculans". IUCN Red List of Threatened Species . 2016: e.T22684006A93010615. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22684006A93010615.en . Retrieved 7 December 2023.
  2. 1 2 Dahlem, Michael. "Black-eared Cuckoo (Chalcites [Chrysococcyx] osculans)". mdahlem.net. Retrieved 16 June 2017.
  3. 1 2 3 4 5 6 "Black-eared Cuckoo | ClimateWatch". www.climatewatch.org.au. Archived from the original on 19 February 2011.
  4. "Cuckoos encourage cooperative warblers". abc.net.au. 20 December 2013. Retrieved 16 June 2017.
  5. 1 2 3 4 5 6 Simpson, K and Day, N. 1998. The Claremont Field guide to the Birds of Australia, Penguin
  6. 1 2 3 4 "Chrysococcyx osculans". 19 October 2015.
  7. "Chrysococcyx osculans, Black-eared Cuckoo".
  8. 1 2 Pizzey and Knight 2007. The Field guide to the Birds of Australia, eight edition. HarperCollins
  9. Payne, R. 2005. The Cuckoos. Oxford University Press
  10. 1 2 3 4 5 6 Payne, R. 2005. The Cuckoos. Oxford University
  11. 1 2 3 Pizzey, G and Knight, F. 2007. The Field Guide to the Birds of Australia, eight edition. HarperCollins
  12. 1 2 3 4 5 Payne, Robert B. (14 July 2005). The Cuckoos. OUP Oxford. ISBN   9780191513558 via Google Books.
  13. "Species: Chalcites osculans (Black-Eared Cuckoo)".
  14. "Black-eared Cuckoo | BirdLife Australia". birdlife.org.au. Retrieved 31 May 2017.
  15. 1 2 Cuckoos, Cowbirds and Other Cheats / N. B. Davies London : A&C Black 2010
  16. Pizzey, G. and Knight, F. 2007. The Field Guide to Birds of Australia, eight edition. HarperColllins
  17. Brooker, L. C.; Brooker, M. G. (1 June 1990). "Why Are Cuckoos Host Specific?". Oikos. 57 (3): 301–309. doi:10.2307/3565958. JSTOR   3565958.
  18. H.L. BELL, Department of Zoology, University of New England, Armidale, NS W 2351, Australia. 3 September 1983