THE SENTRY LARK.
The Sentry Lark (Macronyx capensis) has received its name from the peculiar cry that it utters when disturbed, which sounds exactly like the Qui vive! employed as a challenge by French soldiers on guard. The plumage of this species is more variegated than that of almost any other Lark, the feathers upon the back being deep grey, edged with a lighter tint, and the exterior tail-feathers of a whitish shade half way up the inner web; the lower part of the body is of almost uniform reddish brown; a streak over the eyes is deep orange, as is the throat, the latter being surrounded by a black line; the eye is reddish brown, the beak dark grey, and the feet of a yellowish shade. The plumage of the female is paler, and the spur upon the foot smaller than in the male. The length of this bird is about seven inches, the wing four, and the tail two and three-quarter inches.
We learn from Le Vaillant that the Spur Lark is found abundantly throughout the whole of Southern Africa, where it principally frequents grassy plains, or the immediate vicinity of streams or brooks. The nest, which is formed of fine roots or similar materials, is concealed under a bush, and the brood consists of three or four blueish-white eggs, marked with reddish-brown spots, most thickly strewn over the broad end. The flesh of this species of Lark is much esteemed as an article of food by the settlers in South Africa.
The COURSER LARKS (Alæmon) may be regarded as the connecting link between the Larks and the Cursorial birds. Their bodies are much elongated, the beak remarkably long, weak, and perceptibly curved; the tarsus is double the length of the middle toe and nail; the tail is long, and straight at its extremity, and the wing comparatively short, the second, third, fourth, and fifth quills being longer than the rest.
THE DESERT COURSER LARK.
The Desert Courser Lark (Alæmon desertorum) is one of the members of this group with which we are most familiar, as it is frequently seen in Europe. In this bird the head and neck are of a greyish cream colour, the back and wing-covers being somewhat yellower; the belly is white, and the breast marked with a few blackish-brown primary streaks; the quills are white at their roots, and black at the tip, whilst the secondaries are entirely white, striped near the middle with black, thus producing a double white border to the wing; the centre feathers upon the tail-covers are of the same colour as the back, but black at the shaft, the exterior feathers having the outer web white, and the rest black, with a yellowish edge. The eye is light brown, the beak and feet pale grey. Both sexes are alike in plumage, but the female is not quite so large as her mate. The length of this species is about eight inches, the wing four and a half, and the tail two inches.
According to our own observation, this very remarkable bird is met with extensively between Cairo and Suez, but is by no means numerous in the desert, and quite unknown in the region of the steppes; we occasionally saw it in small parties, but usually living in pairs, which appeared to associate peacefully with each other. As we have said, the Desert Courser Lark much resembles the Cursorial birds in many particulars. It runs with great rapidity, in the same manner as the Isabella Courser (Cursorius Isabellinus), and when in flight hovers or rises into the air with a bold stroke of the wings. When about to alight it poises itself for some moments, and then, closing its wings, comes rapidly to the ground, repeating this form of ascent and descent several times in quick succession, apparently solely for the purpose of affording pleasure to its admiring mate. The song of these birds is loud and twittering. The nest we have never seen, and our information as to the food upon which they subsist is very slight. Insects, we believe, constitute their principal diet, and they probably eat some kinds of seed. They exhibit no fear of man, and may often be seen running almost tame about the streets and court-yards of Suez and Cairo.
