APPENDIX^ 
237 
THE CRESTED COCKATOO,. 
PsiTTACUs Cristatus. Lin. 
1 cannot regard this bird in any other view than as a: 
variety of the Plittacus Criftatus of Linnjeus, or large white 
Cockatoo, which has been defcribed by almoft all ornitho* 
logifts, and figured in feveral works of Natural Hiftory. 
The bird fecms liable to great variation both as to fize and 
colour ; the white in fome being of a much purer appear- 
ance than in others, and the yellow on the crefl: and tail 
more predominant. All the varieties yet known agree in 
having the beak and legs blackifh. The individual fpeci- 
men here figured feemed of a fomewhat flenderer form than 
ufual 1 he colour not a pure white, but flightly tinged 
on the upper parts, and particularly on the neck and. 
fhoulders, with duiky. The feathers on the front white, 
but the long lanceolate feathers below them, which form the 
crefl:, of a pale jonquil-yellow. 1 he tail white above, and 
pale yellow beneath; as a;e alfo the wings*. 
THE 
