At the approach of autumn, no matter where their summer may have been passed, Plovers migrate southwards in large flights, those from Scotland to the southern counties of England, where they frequent wide moist pastures, heaths, and reclaimed marshland. From the northern parts of the continent of Europe they take their departure in October, either to the European shores of the Mediterranean, or to the plains of Northern Africa. In these migrations they are not unfrequently joined by Starlings. They travel in close array, forming large flocks much wider than deep, moving their sharp wings rapidly, and making a whizzing sound which may be heard a long way off. Now and then, as if actuated by a single impulse, they sweep towards the ground, suddenly alter the direction of their flight, then wheel upwards with the regularity of a machine, and either alight or pursue their onward course. This habit of skimming along the ground and announcing their approach beforehand, is turned to good purpose by the bird-catcher, who imitates their note, attracts the whole flight to sweep down into his neighbourhood, and captures them in his net, a hundred at a time, or, when they are within range, has no difficulty in killing from twelve to twenty at a shot. Not unfrequently, too, when some members of a flock have been killed or wounded, the remainder, before they remove out of danger, wheel round and sweep just over the heads of their ill-fated companions, as if for the purpose of inquiring the reason why they have deserted the party, or of alluring them to join it once more. This habit is not peculiar to Plovers, but may be noticed in the case of several of the sea-side waders, as Dunlins and Sanderlings. In severe winter weather they desert the meadows, in which the worms have descended into the ground beyond the reach of frost, and so of their bills, and resort to the muddy or sandy sea-shore. In the Hebrides it is said that they do not migrate at all, but simply content themselves with shifting from the moors to the shore and back again, according to the weather. In the northern parts of France, on the other hand, they are only known as passengers on their way to the south. From making their appearance in the rainy season they are there called pluviers, whence our name Plover, which, however, is supposed by some to have been given to them for their indicating by their movements coming changes in the weather, in which respect indeed their skill is marvellous.
The Golden Plover, sometimes called also Yellow Plover, and Green Plover, is found at various seasons In most countries of Europe; but the Golden Plovers of Asia and America are considered to be different species.
THE GREY PLOVER
SQUATÁROLA HELVETICA
Winter—forehead, throat, and under plumage, white, spotted on the neck and flanks with grey and brown; upper plumage dusky brown, mottled with white and ash colour; long axillary feathers black or dusky; tail white, barred with brown and tipped with reddish; bill black; irides dusky; feet blackish grey. Summer—lore, neck, breast, belly, and flanks, black, bounded by white; upper plumage and tail black and white. Length eleven and a half inches. Eggs olive, spotted with black.
Many of the Waders agree in wearing, during winter, plumage in a great measure of a different hue from that which characterizes them in summer; and, as a general rule, the winter tint is lighter than that of summer. This change is, in fact, but an extension of the law which clothes several of the quadrupeds with a dusky or a snowy fur in accordance with the season. The Grey Plover, as seen in England, well deserves its name, for, as it frequents our shores in the winter alone, it is only known to us as a bird grey above and white below. But in summer the under plumage is decidedly black, and in this respect it bears a close resemblance to the Golden Plover, with which, in spite of the presence of a rudimentary fourth toe, it is closely allied. My friend, the Rev. W. S. Hore, informs me that he has seen them in Norfolk wearing the full black plumage in May. The occurrence of the bird, however, in this condition, in England, is exceptional; while in the northern regions, both of the Old and New World, it must be unusual to see an adult bird in any other than the sable plumage of summer.
The Grey Plover is a bird of extensive geographical range, being known in Japan, India, New Guinea, the Cape of Good Hope, Egypt, the continent of Europe, and North America. In this country, as I have observed, it occurs from autumn to spring, frequenting the sea-shore, and picking up worms and other animal productions cast up by the sea. Grey Plovers are less abundant than Golden Plovers; yet, in severe seasons they assemble in numerous small flocks on the shores of the eastern counties, and, as Meyer well observes, they are disposed to be "sociable, not only towards their own species, but to every other coast bird. When a party either go towards the shore, or leave it for the meadows and flat wastes, they unanimously keep together; but when alighting, they mix with every other species, and thus produce a motley group." They fly in flocks, varying from five to twenty or more, keeping in a line, more or less curved, or in two lines forming an angle. Their flight is strong and rapid, rarely direct, but sweeping in wide semicircles. As they advance they alternately show their upper and under plumage, but more frequently the latter; for they generally keep at a height of sixty or a hundred yards from the ground, in this respect differing from Ringed Plovers, Dunlins, etc. Occasionally one or two of the flock utter a loud whistle, which seems to be a signal for all to keep close order. Just as Starlings habitually alight wherever they see Rooks or Gulls feeding, so the Grey Plovers join themselves on to any society of birds which has detected a good hunting-ground. During a single walk along the sands I have observed them mixed up with Dunlins, Knots, Gulls, Redshanks, and Royston Crows; but in no instance was I able to approach near enough to note their habit of feeding. They were always up and away before any other birds saw danger impending. In autumn they are less shy.
The people on the coast describe the Grey Plover as the shyest of all the Waders, and could give me no information as to its habits; but Meyer, whose description of this bird is very accurate in other respects, states that "its general appearance is peculiar to itself; it walks about on the ground slowly and with grace, and stops every now and then to pick up its food; it carries its body in a horizontal position on straight legs, and its head very close to its body, consequently increasing the thick appearance of the head."
The Grey Plover breeds in high latitudes, making a slight hollow in the ground, and employing a few blades of grass. It lays four eggs, on which it sits so closely that it will almost be trodden on. When thus disturbed its ways remind one of the Ringed Plover.
THE DOTTEREL
EUDROMIAS MORINELLUS