Red-tailed Black-Cockatoo Parrot


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Red-tailed Black-Cockatoo Parrot

Calyptorhynchus banksii

  • LC Least Concern
  • Names (14)
  • Subspecies (5)

Identification

50–65 cm; 570–870 g; female smaller. Male uniformly black with broad red subterminal band 

© Arthur GrossetCook, Queensland, Australia 17 Oct 2010Macaulay Library ML 206094211eBird S65190128

across tail except on central two feathers; erectile, backward-sloping crest  bill 

© Marian WAlice Springs, Northern Territory, Australia 01 May 2010

and feet dark grey. Female 

© Eric van PoppelCairns, Queensland, Australia 24 Aug 2011Macaulay Library ML 204547861eBird S64983728

brownish black with numerous yellow spots 

© Arthur GrossetCook, Queensland, Australia 17 Nov 2010Macaulay Library ML 206094191eBird S65190223

on head 

© A EmmersonLondon, England, United Kingdom 27 Oct 2013

and shoulders 

© Colin TrainorDarwin, Northern Territory, Australia 11 Feb 2011Macaulay Library ML 205460371eBird S65106888

breast 

© Nicholas TomneyKalamunda, Western Australia, Australia 04 Oct 2012Macaulay Library ML 204531611eBird S64996053

barred yellow; undertail-coverts barred orange-red; subterminal tail-band yellow-orange barred black, with central two feathers all black; bill bone-coloured; feet dark grey. Immature as adult female; male does not attain adult plumage until fourth year. Nominate race largest; naso has a proportionally large bill, while graptogyne lacks notch in upper mandible; large-billed 

© Arthur GrossetWest Arnhem, Northern Territory, Australia 05 Oct 2013Macaulay Library ML 206094181eBird S65189199

race macrorhynchus rather similar to, and often confused with, C. lathami.

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.Until recently, species name commonly given as C. magnificus, which had several days’ seniority, but that name is invalid as description based on illustration of immature female C. lathami (12). Five subspecies currently recognized.

Subspecies


SUBSPECIES

Calyptorhynchus banksii banksii Scientific name definitions

C. b. banksii+1

Distribution

E Australia (N and E Queensland to NE New South Wales).


SUBSPECIES

Calyptorhynchus banksii macrorhynchus Scientific name definitions

C. b. macrorhynchus+1

Distribution

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


SUBSPECIES

Calyptorhynchus banksii samueli Scientific name definitions

Distribution

inland Australia from CW and SW Western Australia to SW Queensland and New South Wales.


SUBSPECIES

Calyptorhynchus banksii naso Scientific name definitions

C. b. naso

Distribution

forests of SW Australia.


SUBSPECIES

Calyptorhynchus banksii graptogyne Scientific name definitions

Distribution

forests of SE South Australia and SW Victoria.

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

Nominate 

© Georges OliosoWest Arnhem, Northern Territory, Australia 12 Sep 2007Macaulay Library ML 204893571eBird S65092153

race in forests across northern tropical Australia; macrorhynchus  occurs in woodland in E Australia; samueli in semi-arid inland shrubland, and, more recently, in cropland; naso and graptogyne found in widely separated eucalypt forests of SW and SE Australia, respectively, with latter separated from samueli by extensive area of mallee-spinifex.

Movement

Dispersive, with seasonal pattern in some areas in response to availability of food; regular seasonal movements in N Australia. Parents may travel several kilometres to feed young.

Diet and Foraging

Nominate race eats a variety of nuts and fruits gathered mainly from trees (TerminaliaPandanusEucalyptus); samueli feeds much more on the ground, on a variety of burrs and hard seeds, e.g. double-gee (Emex) and Erodiumnaso  specializes in using its large strong bill to remove the large seeds from the 2–3 cm woody fruits of marri (Eucalyptus calophylla); graptogyne feeds on the fruits of a variety of forest eucalypts, especially red stringybark (Eucalyptus baxteri).

Sounds and Vocal Behavior

Commonest calls are a low-pitched grating rolling “krrah” and a slightly-higher pitched nasal “kee”, which are sometimes given in combination. Alarm call described as an abrupt “krurr-rak” and breeding call a repeated mechanical “waa-waa”.

Breeding

Laying Mar–Oct in different parts of range. Nests in large, usually vertical hollows lined with woodchips. Clutch single egg  (rarely two), size 56·2 mm × 37·4 mm (race macrorhynchus) or 46·2 mm × 36·1 mm (race samueli) (3); incubation 28–32 days, by female, which is fed by male; chick  has long, dense yellow down  ; fledging 10–12 weeks. May breed twice in one year (autumn and spring); can renest after failure.

Conservation Status

Conservation status on BirdlifeLC Least Concern

Not globally threatened. CITES II. Nominate and race samueli 

© Josep del HoyoAr Rayyan, Qatar 12 May 2008

numerous and in no danger. Race macrorhynchus is often confused with C. lathami, and present status unclear. Race naso has more restricted distribution; status insufficiently known, but probably vulnerable; currently subject to study. Race graptogyne also has restricted range; in severe danger through loss of hollows for nesting in, as a consequence of fires, logging and habitat clearing for agriculture, and insufficient regeneration; endangered, with a population of less than 1000 birds with fewer than 100 breeding pairs; currently subject to study. Protection of breeding hollows from careless burning (naso) and felling for firewood (graptogyne) is essential for future survival of these races.


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