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 to the other the propriety of building a nest, but it may be the actual manner in which the nest is built. There would, of course, be no doubt as to this, if the birds—or one of them—were to continue thus to pluck and bring tufts or blades of grass. But this was never the case when I saw them, nor did I ever remark any action on their part that had more the appearance of systematic nest-building than this. The nest of the great skua is very slight, a mere pressed-down litter of coarse long grass, shallow, and having a pulled, tattered look round the edges suggestive of the crown of a shabby straw hat or bonnet from which the remaining portion has been torn. Compared to it, the nest of a gull, being formed of quite a considerable quantity of bog-moss and heather, basin-shaped, and fairly regular and with well-formed, soft, cushiony rim all round it, is almost a work of architecture.

Yet neither do gulls seem to work regularly or systematically in the building of their nests. One may be seen piking into the ground with its powerful beak and then withdrawing it with a tuft of moss or a sprig of heather held between the mandibles. After making a few sedate steps with this the bird lays it down, but instead of fetching some more, now, and continuing the work, it merely stands there and appears to forget all about it. Another will fly up with some material, and, after circling a little above its partner on the ground, will alight and lay it down as a contribution beside it, in a very stolid sort of way. The other bird does not help, and does not seem particularly interested, and the two now stand side by side for about half-an-hour, when the one that has last