Page:Natural History, Birds.djvu/318

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AUKS.
305

are short; the toes webbed, armed with curved claws, the hind toe wanting.

The Puffins are inhabitants of the northern regions, but are migratory visitors to the more temperate regions, keeping near the shore, concealing themselves by night in the clefts of rocks, or in burrows, which they themselves excavate to the depth of a yard or more. In these burrows the female lays a single egg on the bare ground. Their flight is heavy and rather quick, but only sustained for short distances, commonly just above the surface of the water, which they sometimes strike with their feet to acquire an additional impetus. In the water their speed is great, and they dive with great facility. They principally feed on marine mollusca and crustacea, to which small fishes are added.

The Common Puffin or Coulterneb (Fratercula arctica, Linn.) visits the rocky shores of the British Islands in summer, for the purpose of breeding; remaining from April to August. It is a bird of singularly grotesque appearance: its short thickset form, its erect attitude, and above all, its extraordinary beak, grooved over with furrows, and marked with bright colours, give it a very peculiar aspect. It is not much larger than a pigeon, but of stouter form, and with a greater head: the crown, hind head, whole upper parts, and a collar round the neck are black; the sides of the head and face pale grey, the whole under parts pure white: the central portion of the beak is pale blue, the base with the mouth yellow, the grooves and tip orange; the latter is the hue also of the eyelids, and of the legs and feet.

The shallow surface-earth on the summit of the