Little Corella


Little Corella

Cacatua sanguinea Scientific name definitions

  • LC Least Concern
  • Names (16)
  • Subspecies (5)

Identification

36–39 cm; 430–580 g; culmen 34 mm. White with medium-length (65 mm) crest and diagnostic short bill; face salmon pink, as are bases of feathers of head and throat that are usually concealed; undersurfaces of wings and tail washed with yellow  ; peri­ophthalmic ring blue-grey, wider below the eye; bill bone-coloured; eye dark brown in both sexes; legs grey. Sexes similar. Juvenile as adults but periophthalmic ring smaller and paler blue. Race gymnopsis 

© Nicholas TalbotManningham, Victoria, Australia 31 Dec 2009Macaulay Library ML 205590051eBird S65118600

has wing and bill shorter 

© Nicholas TalbotManningham, Victoria, Australia 31 Dec 2009Macaulay Library ML 205589971eBird S65118600

, general coloration redder; westralensis similar to gymnopsis  but separated by 1000 km; norman­toni smaller in all dimensions and very similar to transfreta, but latter has buff underwing coloration.

Systematics History

Editor’s Note: This article requires further editing work to merge existing content into the appropriate Subspecies sections. Please bear with us while this update takes place.Closely related to C. goffiniana. Sometimes considered conspecific with C. pastinator, and in the past these two treated as conspecific with C. tenuirostris; but current evidence suggests that the three are probably best considered to constitute three separate species. Has hybridized in the wild with Callocephalon fimbriatum and Eolophus roseicapilla (1). Race westralensis sometimes subsumed within gymnopis. Proposed race subdistincta (from Kimberley, in N Western Australia) included within nominate; ashbyi (from Yanco Glen, N of Broken Hill, in W New South Wales) is synonymized with gymnopis. Five subspecies currently recognized.

Subspecies


SUBSPECIES

Cacatua sanguinea transfreta Scientific name definitions

Distribution

lowland S New Guinea between Kumbe R and lower Fly R.


SUBSPECIES

Cacatua sanguinea sanguinea Scientific name definitions

C. s. sanguinea

Distribution

NW Western Australia (Kimberley) and Northern Territory E to Gulf of Carpentaria.


SUBSPECIES

Cacatua sanguinea westralensis Scientific name definitions

Distribution

WC and C Western Australia.


SUBSPECIES

Cacatua sanguinea gymnopis Scientific name definitions

C. s. gymnopis

Distribution

inland C and E Australia (S from NW and C Queensland).


SUBSPECIES

Cacatua sanguinea normantoni Scientific name definitions

Distribution

W Cape York Peninsula (NW Queensland).

Distribution

Editor’s Note: Additional distribution information for this taxon can be found in the ‘Subspecies’ article above. In the future we will develop a range-wide distribution article.

Habitat

Grassy woodland  , scrub and grassland throughout tropical N and inland semi-arid Australia and S New Guinea.

Movement

Strong flier, travelling long distances to water or to abundant food sources, e.g. a piggery, feed-lot or grain crop. Some very large flocks  assemble, e.g. 32,000 birds at a sorghum crop, Kununurra, Western Australia; in such flocks  members tend to roost together, but flock breaks up into smaller units for breeding.

Diet and Foraging

Seeds of grasses and herbaceous plants, together with shoots, roots and blossom; also insects and their larvae. Sociable, foraging in large flocks, especially where grain fed to livestock. Numbers and range have increased following widespread provision of water from subartesian bores. Most seeds gathered from the ground  , but where the plant 

© David taylorGympie, Queensland, Australia 01 Aug 2010Macaulay Library ML 205573411eBird S65117532

is robust enough for the bird to land on it (e.g. sorghum), bird will feed directly on the ear of grain; control is not easy in the latter circumstances since, if bird is disturbed by shooting noise or explosive devices, it will drop the head it is feeding on, fly around a bit, settle again and begin to eat a fresh head, with result that damage can be doubled. Also feeds from troughs containing grain for livestock. Eats seeds of many different annual and perennial grasses when available.

Sounds and Vocal Behavior

Flight call is a nasal bisyllabic or trisyllabic “ke-wheh” or “ke-re-weh”, very similar to C. tenuirostris but slightly lower-pitched. Alarm calls include loud screeches and braying sounds.

Breeding

Laying in dry season (May–Oct) in tropics, in spring (Aug–Oct) further S, but May–Oct in South Australia. Nests  in tree-hollows  ; hollow baobabs (Adansonia gregorii) much used in N, whereas elsewhere species typically nests in hollow eucalypts  lining watercourses. 2–3 eggs  (occasionally 4); incubation 24–26 days, by both parents; chick has sparse pale yellow down; nestlings remain in the hollow for c. 7 weeks, and are fed by both parents. After the young have fledged  , whole family joins large nomadic foraging flock.

Conservation Status

Conservation status on BirdlifeLC Least Concern

Not globally threatened. CITES II. Common throughout inland and N Australia, frequently attaining pest status where irrigated cereal crops are grown  . No definite population figures available, but species is undoubtedly secure at present. Recently established in Tasmania, where origins of population uncertain.


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