The ABU-RISCH (_Hedydipna metallica_) represents a group recognisable by their slightly-curved beak, scarcely equalling the head in length; their comparatively short wings, in which the second, third, fourth, and fifth quills are of equal length; and their wedge-shaped tail, the two centre feathers of which are usually considerably prolonged. The male is of a metallic green on the head, throat, back, and shoulder-covers; the under side is bright yellow, a line upon the breast and the rump have a violet sheen; the quills and tail-feathers are blackish blue, the eye brown, and the beak and feet black. The back of the female is of a light olive-brown, and her under side sulphur-yellow; her quills and tail-feathers have light edges. The young resemble the mother, but are of a paler hue. The length of this species is six inches, of which three and a half belong to the centre tail-feathers, the rest do not exceed thirteen and a quarter; the wings measure two inches and one-sixth. The Abu-Risch is met with in all such parts of Africa as afford it the shelter of its favourite mimosa-trees, upon and around which it may literally be said to spend its whole existence. Early in the morning, and towards the close of the day, it usually perches quietly among the branches, and only displays its full vivacity during the noontide heat, when it flutters rapidly from blossom to blossom, in search of food, singing and chirping briskly as it flies in cheerful companionship with its almost inseparable mate. The song of the male is pleasing, and accompanied by a great variety of gesticulations and attitudes, calculated to exhibit his crest and plumage in all their varied beauty to the admiring gaze of the female, who usually endeavours to imitate her partner, but, owing to the comparative dullness of her colours, with a far less imposing result. In Southern Nubia the breeding season commences in March or April. The nest, which is variously formed, is neatly and skilfully woven with cotton-wool and similar materials, and lined with hair or spiders' webs. This pretty little structure is usually suspended from the end of a branch, at no great height from the ground, and is entered by an aperture at the side, frequently so situated that the leaves of the branch overhang and shade the entrance hole. Both parents work busily in constructing this snug apartment for their young, and have seldom completed their labours in less than a fortnight's time. The eggs, which are oval in shape, and white, are incubated by the female alone.