The bird seems liable to great variation both as to size and colour; the white in some being of a much purer appearance than in others, and the yellow on the crest and tail more predominant. All the varieties yet known agree in having the beak and legs blackish. The individual specimen here ﬁgured seems of a somewhat slenderer form than usual. The colour not a pure white, but slightly tinged on the upper parts, and particularly on the neck and shoulders, with dusky. The feathers on the front white, but the long lanceolate feathers below them, which form the crest, of a pale jonquil-yellow. The tail white above, and pale yellow beneath, as are also the wings.
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