Fig. 109.—Black Tern. ⅐ natural size.
Kittiwake.
Rissa tridactyla.
Bill greenish yellow; legs and feet black; mantle deep grey; head, neck, tail, and under parts white. Length, fifteen and a half inches.
The kittiwake takes its pretty name from its usual cry, composed of three notes, two quick and short, and one long. It is the smallest of the British gulls, excluding the stragglers, and is also one of the handsomest and most interesting in its habits. It is more of a sea-bird than most gulls, feeding principally on small fish, which it captures after the manner of a tern, hovering motionless for a few moments, then dashing down on to the water with great force. It is common round the British Islands throughout the year, but probably most of the birds that breed on our coasts migrate to more southern regions in winter, their places, meanwhile, being taken by visitors from the north. Its breeding-sites, often shared with the guillemot and razorbill, are precipitous rocky cliffs fronting the sea, the nest being placed on the ledges and wherever a projecting rock affords standing-room for a bird of its size. When the colony is a numerous one the birds may be seen whitening the face of the precipice from within a few feet above high-water mark to within a few feet of the top. The nests, often placed so near together as to be almost touching, are rather bulky, built of seaweed mixed with turf, and lined with dry grass. Two or three, sometimes four, eggs are laid, varying in ground-colour from greenish blue to olive-brown, or buff, or buffish brown, spotted and blotched with reddish brown, and under-markings of pale brown and grey.
Where suitable sites exist, and the birds are not too much molested, the kittiwakes have breeding colonies on the British coasts from the Scilly Islands and the Cornish and Devon cliffs right away to St. Kilda in the north. The kittiwakes breed later than most gulls, unfortunately for them. It has been pointed out again and again that the young birds are often hardly able to feed themselves, and in many cases are not yet out of their nests, at the end of July, which is also the end of the close time for sea-birds. It then becomes lawful for the scoundrels who practise this form of sport to slaughter the kittiwakes—both the helpless young and the parent birds that are engaged in feeding and protecting them.
Herring-Gull.
Larus argentatus.
Bill yellow; legs and feet flesh-colour; mantle grey; head, tail, and lower parts white; outer primaries black. Length, twenty-four inches.
The herring-gull, which derives its name from its habit of following the shoals of herrings, is common on our coasts throughout the year. Like most gulls, it searches the shore at ebb-tide for stranded marine animals, dead and alive, and garbage of all kinds. It quarrels with ravens and crows over the carcass of a dead sheep, and, like the raven, is a plunderer of eggs and young birds from the cliffs. It is often seen at a distance from the sea, roaming over the moors in search of prey or carrion; and it also feeds on insects and, like the black-headed gull, sometimes follows the plough to pick up worms and grubs. It nests on precipitous, rocky shores, usually making choice of the summit or upper ledges. It also breeds on flat islands, sometimes in company with the lesser black-backed gull, which it resembles in size and general appearance. It usually breeds in communities, but is not so strictly gregarious as most gulls at this season. The nest, which is usually somewhat bulky, is composed of seaweed and herbage, and lined with dry grass. Three eggs are laid, stone-colour or light olive-brown, spotted and blotched with dark umber.