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72 with one's dinner in one's hand—the beak is used more as a hand here than a mouth—yet what is done with entire ease is as though it were not done at all. Even so do the guillemots—the common ones, I mean—but then, they used to fight for their fish. Here I saw little or nothing of any real attempt on the part of one bird, to take the fish from another.

In swimming under water the black guillemot uses its wings only—the rose-red legs trail behind it, a fading fire as it goes down. The body becomes one great glaucous-green bubble, which has, still more, a luminous appearance. The effect may almost be called beautiful, but it is still more odd and bottle-imp-like. Most diving sea-birds exhibit this appearance under water, but not all in the same degree. Whether sexual selection has come into play here I know not.

A pair of these birds are now feeding their young. The nest is in a hole in the earth, on a ridge of the precipitous grass-slope of the cliff, just above where it breaks into rocks, and drops sheer to the sea. Both parents feed the chick—for their family is no larger—but one more often than the other. They bring, each time, a single fish—a sand-eel, often of a fair size—and disappear with it into the hole, reappearing shortly afterwards. Once both are in the hole together, having entered in succession, each with a fish, but generally when the two meet at the entrance one only brings a fish and goes in, and the other, having nothing, stays outside. When the parent bird has fed