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see parrotparrot,
common name for members of the order Psittaciformes, comprising nearly 400 species of colorful birds, pantropical in distribution, including the parakeets. Parrots have large heads and short necks, strong feet with two toes in front and two in back (facilitating climbing
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a bird of the subfamily Kakatoeinae of the family Psittacidae. The body measures 60– cm long. A characteristic feature is the crest on the head. Cockatoos are found from the islands of Kalimantan and Flores, the Philippines, and New Guinea to the Solomon Islands, Australia, and Tasmania. There are five genera: Probosciger, Calyptorhynchus, Callocephalon, Kakatoe, and Nymphicus. These genera comprise 17 species. The birds live in forests, often near fields, and stay in flocks. They eat fruits and seeds, and their powerful beaks are capable of cracking even the very hard fruits of palm trees. In some places cockatoos seriously damage crops. They build their nest in tree hollows or in fissures of cliffs. The large cockatoos lay two or three white

Table 1. Composition of coal tar
FractionOutput (% of tar bulk)Boiling point (°C)Density at 20°C (kg per cu m)Recoverable substances
Light…………0.2–0.8To 170900–960Benzene and its homologues
Phenol…………1.7–2.0170–2101,000–1,010, 010Phenols, pyridine bases
Naphthalene……8.0–10.0210–2301,010–,1,020Naphthalence, thionapthene
Heavy (absorbring)….8.0–10.0230–2701,050–1,070Methyl naphthalenes, acenaphthene
Anthracene……20.0–25.0270–360(and to 400)1,080–1,130Anthracene, phenanthrene, carbazole, others
Pitch………50.0–65.0Over 3601,200–1,300Pyrene and other highly condensed aromatic compounds

eggs; the small birds of the genus Nymphicus lay five or six eggs.Cockatoos are often kept in cages.


any of various parrots of the genus Kakatoe and related genera, such as K. galerita (sulphur-crested cockatoo), of Australia and New Guinea. They have an erectile crest and most of them are light-coloured
References in periodicals archive ?
For LB corellas and galahs, ranges are defined as maximum and minimum analyzed values because these species provided fewer than 20 samples, whereas ranges for SC cockatoos are defined as the mean [+ or -] 2 standard deviations.
The two-year project aims to involve more than 1,000 volunteers - including school children throughout Perth and the South-West - in community events, school visits and stalls at agricultural shows to raise awareness of cockatoos and their importance in the ecosystem.
Alice Auersperg, the manager of the Goffin Lab who was also one of the experimenters, said that interestingly and just opposite to human toddlers the cockatoos had more problems solving the Piagetian invisible displacements than the transposition task with which children struggle until the age of four.
Instead the cockatoo faces claim that logging has no impact on their nesting hollows or food supply.
Cee Lo Green's pink Cockatoo is the latest talent to hit "The Voice," already getting more attention than the show itself.
The average lifespan of a cockatoo can be 70 to 80 years, but there have been some reported cases of cockatoos living to be over 100.
His love of books and the tree with the cockatoos is movingly shown and the ultimate end to the story is inevitable.
Filling the skies of Australia, cockatoos have long captured human imagination.
Tracking cockatoos using radio or satellite tracking presents a challenge to researchers, due to the difficulty of finding a transmitter that doesn't impair the birds' flight or survival, and that can withstand being nibbled by their very strong beaks.
A number of parrots, cockatoos and macaws have also been stolen this year.
A MAJOR search is continuing for two rare and endangered cockatoos stolen from Birmingham Nature Centre.
A pair of rare and endangered cockatoos nicknamed Elvis and Priscilla have been stolen from their nature reserve home.