The chick, in order to be fed, places its bill within that of the parent bird, and evidently gets something which she brings up into it. This appears to be liquid and, I suppose, is oil. Had it been solid, I must, I think, at this close distance, have seen it—or at least have seen that it was. Where, however, this supply of oil comes from, or how it is procured, I have no very clear idea. Though the actions of the old bird in thus feeding the chick are something like those of a pigeon, yet they are much easier and, so to speak, softer. The liquid food is brought up without difficulty or straining, as one might, indeed, expect would be the case, seeing the ease with which the bird can at any moment squirt it out, when angry, and the distance to which it is shot. Nor is this the only power of the kind which these petrels possess, for they are able to eject their excrement to a quite astonishing distance—greater even, perhaps, than that to which the cormorant or shag attains in this art—at least it seems so at the time. This power is fully developed in the chick—by whom, indeed, it is the more needed—and I notice that the rock where each one lies is clean enough, though all round about it is whitened.
ON THE EDGE OF THE PRECIPICE
When the mother petrel leaves the chick, she, for the most part, continually circles round in the neighbourhood, and almost at every circle looks in at it, sometimes waking it up as it lies asleep, causing it to give an impatient little snap of the bill towards her. It is as though she could not sufficiently love, cherish, and look at it. It is her only child, and a spoilt one.
I must not forget to note down—now that it is full before me—that the inside of the chick's bill, with the mouth generally, is somewhat more lightly coloured than in the old bird; it is more pink—which may represent the natural colour—and less mauvy. This difference, as in the other cases, is what we might expect to see, were the colour a sexual adornment; but why, if it is not so, should there be any difference depending on age in such a region?
The great skua still reigns here in its accustomed territory, which, whilst encircled on all sides by that of the lesser one, is not intermingled with it, even on the frontiers. Many of the young birds are still about, but being now feathered and active in proportion to their size, they are more difficult to find than when I was here before. Though the old birds still swoop at one, they are not so savage as they were when the chicks were young and fluffy; they do not actually strike, but swerve off, particularly if one glances up at them as they approach. The Arctic skua, on the other hand, is still as bold as ever, and will strike one as repeatedly and come as near to knocking one's hat off without doing it (not near at all, that is to say) as ever it did before; or the great one either, I might add, as far as my own personal experience is concerned. I would not, however, be unduly sceptical, and this I can say, that I could easily set my hat on my head so that either bird—or any bird—might knock it off again.