Yellow crested Cockatoo


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Yellow-crested Cockatoo Cacatua sulphurea

Yellow crested Cockatoo  or  cacatua sulphureac. 33 cm; 350 g. with long, forward-curving yellow crest feathers, yellow ear-coverts  , and yellow undersurfaces of wings and tail; bill black; feet grey; eye black in male, red-brown in female  ; bare periophthalmic skin pale blue.

Immature similar to adult, but iris pale grey. Races  separated on size, intensity of yellow on ear-coverts, and crest colour.

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. galerita and C. ophthalmica. Race citrinocristata distinctive by virtue of long peachy-orange vs yellow crest ; reportedly livelier, noisier disposition ; and vs abbotti larger bill but shorter wings, vs sulphureadjampeana and occidentalis longer tail , but vs parvula longer tail , hence scoring 7 against all taxa except 6 vs parvula .

Race abbotti strikingly large (except in bill size) , with small, pale brownish-yellow ear-covert patch . Races djampeana and occidentalis generally regarded as synonyms of nominate race and parvula, respectively, but new evaluation indicates real morphological differences and even possible subspecific division within djampeana . Six subspecies recognized.

yellow crested cockatoo lifespan

Subspecies

Introduced (not citrinocristata) to Hong Kong and Singapore.


SUBSPECIES

Cacatua sulphurea sulphurea Scientific name definitions

Distribution

Sulawesi, Muna, Butung, Tanahjampea and adjacent islands


SUBSPECIES

Cacatua sulphurea abbotti Scientific name definitions

Distribution

Masalembu Besar I (Java Sea).


SUBSPECIES

Cacatua sulphurea parvula Scientific name definitions

Distribution

Lesser Sundas (Sumbawa to Timor)


SUBSPECIES

Cacatua sulphurea citrinocristata Scientific name definitions

C. s. citrinocristata

Distribution

Sumba (SW Lesser Sundas).

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.

Yellow crested cockatoo habitat

Woodland and cultivation, but not found inside forests; occurs from sea-level up to 500 m on Sulawesi, and sometimes up to 1200 m elsewhere.

Movement

Tends to roost communally and to feed in groups.

Diet and Foraging

Feeds mainly in trees 

Yellow crested Cockatoo

, taking seeds, nuts, berries and fruit. Destroys young fruits of Ceiba and Gossampinus, and attacks coconuts.

sulphur crested cockatoo behaviour 

Commonest call is a harsh grating note on an even pitch or slightly modulated, “grrreh”. When perched, vocabulary more diverse, with most notes having similar tonal quality to flight call, combined with nasal squeals and squawks.

yellow crested cockatoo breeding

Poorly known; birds in breeding condition in Sept/Oct. Nests in tree-hollow, e.g. in Gossampinus. 2–3 eggs. Other data from captivity: incubation c. 27 days, by both parents; chick has sparse yellow down; nestling remains in the nest for c. 10 weeks, fed by both adults.

yellow crested cockatoo conservation status

These Parrot are very long-lived, and can live upwards of 75 years in captivity, although

yellow crested cockatoo only live to about 20–40 years in the wild

CRITICALLY ENDANGERED. CITES I. Formerly common, but all races have been seriously reduced in numbers due to widespread trapping 

Yellow crested Cockatoo


for the avicultural trade, in combination with habitat destruction. Dramatic population decline, particularly in late 20th century; now extinct on many islands and close to extinction on most others. Whereabouts of populations large enough to supply so many birds unknown to scientists; trapping of roosting birds with sticky poles may eliminate whole populations. Race abbotti 

critically endangered, with only 10 birds encountered in 2008. Probably extirpated on Lombok and close to extinction on Sulawesi, Sumbawa and Flores; 7 separate sightings of 2–19 birds in Rawa Aopo Watumohai National Park, SE Sulawesi in autumn 1995. Not recorded on Nusa Penida (E of Bali) since 1986.

Occurrence on considerable number of islands over extensive area may mask serious decline throughout most of range. Still fairly common on Komodo, in national park. Race citrinocristata 

may be vulnerable, due to habitat loss and trapping, combined with expected further loss of nest-sites. Global population estimated at fewer than 7000 individuals: 3200–5000 on Sumba, 500 on Komodo despite estimated decline of 60% between 2000 and 2005

200–300 on Timor Leste, 200–300 on Sulawesi, 20–50 on West Timor, 40–70 on Flores, 50–100 on Sumbawa, 100 on Rinca and c. 700 other birds in total. Precipitous decline almost entirely attributable to national and international trade, but now exacerbated by large-scale logging and habitat destruction.

Illegal trapping continues in many areas including Rawa Aopa Watumohai National Park, Buton and Kadatua Islands. Previously considered Endangered, but its rapid ongoing population decline, caused by unsustainable trapping for the cagebird trade, led to uplisting to Critically Endangered in 2000.

Significant increase recorded however in Sumba in 2002, attributable to trade ten years before . Each subspecies should now be managed as a separate unit of conservation concern . Law enforcement must be improved.


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