The SISKIN PARROT (_Nasiterna pygmæa_), the dwarf among the dwarfs belonging to this order, lives in New Guinea and the Papuan Islands. Its green plumage is varied by a yellowish shade on the head, and the face is light golden brown; the middle tail-feathers are blue, the rest are black, with yellow tips; the beak is extraordinarily high and strong. As far as we know, this bird is not rare upon the high trees on the coast of New Guinea and in the forests of Salawatis and Misool, but no observer has as yet given us particulars of its habits. COCKATOOS. Amongst the different species of parrots with which Australia is enriched the COCKATOOS (_Plyctolophus_) take high rank. The members of this group are distinguished by their compact body, short tail, and wings of middle size; their large, short, broad beak toothed at the margin, the upper mandible of which terminates in a strong hook. The tongue is usually fleshy and smooth, the region of the eye bare, and the head decked with an upright tuft of bright and beautiful feathers. The plumage is generally very striking, either by reason of its pure white or delicate rose colour, or (for a parrot) the unusually dark tints that predominate. Cockatoos are found not only in Australia, but in the Moluccas, New Guinea, and the Philippine Islands, where most kinds establish themselves in enormous flocks in the woods, and fly from thence over the fields and plains, presenting an appearance that is enchantingly beautiful. "Perched under the shadow of the dark foliage," says Mitchell, "their bright wings and glowing crests transform the heights upon which they live into regions of the most exquisite beauty." In their habits and mode of life Cockatoos resemble other parrots, and must be reckoned among the most pleasing of the whole race. It is quite true that when living together in large flocks their cries frequently become a deafening noise intolerable to ordinary ears, but a solitary bird is very engaging; indeed, there is something so extremely tender in the tone in which it utters the word "cockatoo" (whence is derived the name), that it attracts us involuntarily, for the cry of "cockatoo" is always intended to express a kindly feeling, and changes when angry into a most fearful shriek. The Cockatoo soon learns to make friends with mankind, plays fewer tricks than other parrots, appears grateful for any kindness that is shown to it, and seems eager to make a fitting return; unkindness alone makes it ill-tempered or mischievous, and its excellent memory enables it to avenge an injury after the lapse of years. Its disposition in general is mild and gentle, and its good qualities numerous. It learns to speak with tolerable ease and fluency, forming the words into phrases, as though it understood them, and applies whole sentences at a fitting opportunity. In their wild state, Cockatoos assemble in large flocks, which remain more or less united even during the breeding season; they