British Sea Birds. Charles Dixon

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СКАЧАТЬ upon the pastures for manure; and I have repeatedly watched the pure-plumaged birds fighting with the Rooks and Crows for a share of the feast. This Gull will also feed on grain, grubs, and worms, is a constant follower of vessels, and congregates in unusual numbers at fishing harbours during the sprat and herring seasons. In its flight it is graceful in the extreme, and it may often be seen soaring at a vast altitude like a Vulture. Writing on the flight of this Gull, Gätke (in his fascinating work, Heligoland, as an Ornithological Observatory) says: “Not only are these Gulls able to soar in a calm atmosphere in a direction straight forwards, or sideways, on calmly outspread wings, but, as has been more fully discussed in the case of Buzzards, they can also, in a manner similar to theirs, soar upwards to any desirable altitude. The Gulls are able to perform their soaring movements on the same plane in all phases of the weather, during the most violent storm, as well as in a perfect calm, progressing forwards or sideways at the most variable rates of velocity; now darting along with the swiftness of an arrow, now merely gliding, as it were, at the slowest pace imaginable. In the latter case, indeed, we are frequently, even against our will, forced to the conclusion that these birds must have at their command some unknown means or mechanism which prevents their sinking; for neither is the surface-area of their wings large enough, nor are these organs sufficiently concave in form, to allow of their supporting the bird after the manner of a parachute.” I can endorse these remarks fully from my own observations (Conf. Idle Hours with Nature, pp. 261, 262). That these flights are accompanied with any vibratory movements of the feathers is erroneous, as I have had many opportunities of satisfying myself, especially when observing the flight of the Fulmar at St. Kilda, the birds then not being more than six feet away from me, when I am positive every individual feather was in perfect rest.

      But to return from this digression to the general habits of the Herring Gull. The breeding season of this Gull is in May and June. Owing to its remarkable aptitude for accommodating itself to the various peculiarities of the coast, it is certainly the most widely dispersed Gull of the British species during the season of reproduction. Perhaps its favourite breeding place is a low rocky island, but failing this it is equally at home upon a range of sea cliffs, a stack of rocks, or less frequently an island in a loch, or, as at Foulshaw Moss in Westmoreland, a marsh. The nest is made on a ledge or in a hollow or chink of the cliffs; in a sheltered hollow of the grassy downs: or amongst the thick growth of sea campion, thrift, and other marine plants that often grow so luxuriantly in the bird’s haunts. I have remarked that the nest is usually larger when built on a cliff than when on the ground, and in some cases is almost dispensed with. It is composed of turf, dry sea-weed, coarse grass, and stalks of various marine plants, lined with finer grass often gathered green. The eggs are two or three in number, varying in ground colour from pale bluish-green through yellowish-brown to olive-brown, and the spots are small and few and dark brown, pale brown, and gray. This Gull will lay a second lot of eggs if the first clutch be taken, as they often are, for culinary purposes. When the nesting places are intruded upon by human visitors, the Gulls, as usual, become very noisy, the birds whose eggs are most directly threatened being filled with the greatest clamour. I have often remarked that Gulls whose nests were safe in inaccessible parts of the cliffs have remained quietly sitting on them, while their less fortunate neighbours have been filled with noisy alarm, as they watched the fate of their eggs from the air above. The note is very similar to that of the preceding species.

COMMON GULL

      This pretty Gull, the Larus canus of Linnæus, is, during the summer months especially, one of the most locally distributed of the British species. The Common Gull formerly bred in Lancashire, but at the present time is not known to do so anywhere in England. From the Solway northwards, it becomes tolerably common as a breeding species, right up to the Shetlands, in many inland localities, as well as on the coast. It is also a somewhat local bird in Ireland. The Common Gull, or “Blue Maa,” as it is locally known, is about half the size of the Herring Gull, with a mantle, in the adult, almost as dark as that of the Lesser Black-backed Gull. During the non-breeding season this Gull is fairly well distributed along the coast, and then visits localities where it is never seen in summer. It is a decided shore species, rarely wandering far out to sea, and is one of the first Gulls driven inland by stormy weather. Although popularly believed to be so inseparably associated with the sea, the Gulls, and especially the smaller kinds such as the one now under notice, often resort to fields even at some distance from the water. The Common Gull seems as much at home inland as on the shore. I have seen it on the high moorlands, and in Scotland flying about many a loch pool, or land-locked sea arm; it is equally at home on the ploughed lands and the pastures, yet its plumage seems strangely out of place in such localities, and the incongruity is further intensified should the startled birds take refuge in a neighbouring tree, as they sometimes do. There is nothing specially remarkable about the flight of this Gull; it is performed in the slow and deliberate manner of all these birds, and is equally wonderful in many of its characteristics. The food of this Gull is composed indiscriminately of marine and terrestrial creatures. The bird will follow the plough, or search the pastures for grubs, insects, and worms; it searches the shore for any stranded creature to its omnivorous taste; it hunts the wide waste of waters in quest of fish, and follows vessels to pick up any refuse that may be thrown from them. This Gull is to a great extent nocturnal in autumn and winter. Its note is a harsh and persistently uttered yak-yak-yak, most frequently heard when its breeding places are invaded by man or predaceous animals. The Common Gull is a thoroughly gregarious and social bird, often congregating in large flocks, and mingling with other species.

      By the end of April most of the adult Common Gulls have left all our southern coasts and retired northwards to their breeding places. As these are visited yearly in succession, it is not improbable that this Gull pairs for life. Its nest colonies are situated both inland and on the coast. An island in a mountain lake, the marshy shore of a loch, the flat table-like summit of a rock stack, or the rolling grassy downs near the open sea, in little populated districts, may be chosen; but so far as my experience with this Gull extends, I have found the favourite site to be rocky islands in quiet secluded sea-lochs. These colonies of Common Gulls vary a good deal in size; and in some districts, perhaps where suitable sites are scarce, the bird breeds in scattered pairs only. The eggs are laid during the last half of May and the first half of June; only one brood is reared in the season, but if the first eggs are taken they are generally replaced. The nest of this Gull varies much in size; some structures are mere hollows lined with a tuft or two of grass; others are more elaborate, composed of heather stems, pieces of turf, sea-weed, and stalks of marine plants, lined with finer grass, often gathered green. They are built indiscriminately amongst the long herbage, in hollows and crevices of rocks, or on ledges of the bare cliffs. In Norway the eggs of this Gull have been taken from the deserted nest of a Hooded Crow, in a pine tree, but no instances of a similar character have occurred, so far as is known, in our islands. The Common Gull usually lays three eggs, but instances of four are not rare. They run from olive-brown to buffish-brown in ground colour, spotted and often streaked with darker brown and brownish-gray. The eggs of this Gull are extremely good eating. One often wonders why they are not gathered for the table, just as much as those of the Lapwing.

KITTIWAKE

      This charming Gull, the Larus tridactylus of scientists, so named from its entirely absent or rudimentary hind toe, is one of the best known, as it is one of the most widely distributed, British species. These remarks are however most applicable to the non-breeding season; for during the nesting time it is rather more local, owing to the conditions under which its young are reared. The Kittiwake very closely resembles the Common Gull in general appearance, but the mantle is paler, the legs and feet are dark brown, and the primaries, or longest feathers of the wings, have broad black tips: it is also a perceptibly smaller bird, the smallest in fact of the typically marine Gulls. Of all the British Gulls the Kittiwake is certainly the most maritime in its habits, and is never known to visit inland districts, unless driven from the coast by storms of exceptional violence. Save in the breeding season it may be met with on all the low-lying coasts, visiting harbours, bays, and fishing villages, and imbuing many a littoral scene with life. The Kittiwake is a much more oceanic bird than the Common Gull, and often wanders immense distances from land in quest of food. It is said that birds of this species have been known to follow vessels across the North Atlantic, but this seems almost incredible – not because the СКАЧАТЬ