This bird resembles the jay in size and form, and is twelve inches in length, of which the tail measures four and a half; the beak is blackish, before and behind the eyes is a blackish triangular spot, formed by the naked skin; the iris of the eye is grey; the whole of the head, the neck, the throat, the breast, the belly, the large wing-coverts, and all the under-coverts, are of a beautiful bluish green; the tail is of a dusky blue green near the base, becoming gradually lighter towards the end.
The female and young ones of the first year have the head, neck, breast, and belly of a reddish grey tinged with bluish green; the back and the last quill-feathers are of a light greyish brown; the rump is green, tinged with indigo; the tail blackish with a tint of blue green; the rest like the male.
Habitation.—In its wild state the roller may be found in Europe and the northern parts of Africa; it only frequents a few spots in Germany, and prefers forests and sandy plains to high mountains: elsewhere it is only seen during the time of its passage[19].
In the house it may be let range at will after the wings are clipt.
Food.—When wild, its principal food is insects and worms; it also eats small frogs, bulbous roots, acorns, and grains of corn.
Breeding.—The nest, placed in the hole of a tree, is made of small twigs, hay, feathers, and bristles. It lays from four to seven white eggs, on which the male takes his turn to sit during eighteen or twenty days. The young ones do not acquire their fine colours till the second year; previous to this period the head, neck, and breast are of a whitish grey.
I had till lately thought that this bird was untamable; but Dr. Meyer of Offenbach has convinced me to the contrary, having himself reared them several times, and kept them in his room. This is his method:
The young ones must be taken from the nest when only half grown, and fed on little bits of cow’s heart, or any other meat which is lean and tender, till they can eat alone; small frogs, worms, and insects may then be added. The means which it takes to kill and swallow these insects are curious enough; it begins by seizing and crushing them with its beak, and then throws them into the air several times, in order to receive them in its throat, which is very capacious. When the piece is too large, or the insect still alive, it strikes it hard against the ground, and begins again to throw it in the air, till falling not across, but so as to thread the throat, it may be easily swallowed.
After having been fed thus long enough, a little barley-meal may be mixed with the meat. I have even brought it to eat bread, vegetables, and softened oatmeal, but it always prefers cow’s heart. I have never seen it drink.