Kitabı oku: «A History of North American Birds, Land Birds. Volume 3», sayfa 43

Habits. The Western Ruffed Grouse was found abundant by Dr. Suckley in the timbered districts throughout Oregon and Washington Territory. Its habits seemed to be identical with those of the eastern birds. Owing to the mildness of the season in the vicinity of Fort Steilacoom, the males commence drumming as early as January, and in February they are heard to drum throughout the night. In the autumn they collect in great numbers in the crab-apple thickets near the salt marshes at the mouths of the rivers emptying into Puget Sound. There they feed for about six weeks on the ripe fruit of the northwestern crab-apple, the Pyrus rivularis of Nuttall.

Dr. Cooper also speaks of this Grouse as very abundant everywhere about the borders of woods and clearings. It was common near the forests east of the Cascade Mountains up to the 49th degree. These birds vary in plumage there, a pale-grayish hue predominating. West of the mountains they are all of a very dark brown. There was, however, no perceptible difference in their habits or cries from those of the same bird elsewhere.

Mr. J. K. Lord assigns to this species an extended geographical range west of the Rocky Mountains,—from the borders of California, throughout Oregon and Washington Territories, extending high up on the slopes of the Rocky Mountains, plentiful in all the timbered lands between the Cascades and the rocky ruts along the banks of the Columbia, over the ridge of the Cascades, and down their western slopes to Frazer’s River, in all the islands of the Gulf of Georgia, and everywhere on Vancouver Island to its extreme northern end, and on the mainland as far north as latitude 53°. The habits of this Grouse are described as singularly erratic, and its food as varied in its character. In the spring their favorite haunt is in the vicinity of stagnant pools, or in the brush around a marsh in which the wild swamp-crab, the black birch, and the alder grow. In such places they mate, and during the breeding-season are said to be very constant and devoted. During the time of pairing, and at intervals after their young are hatched, the male produces the sound known as drumming. The bird is said to squat on a log or a fallen tree, motionless as though it had no life. Suddenly all the feathers appear as if reversed, the tail is erected, the ruff round its neck stands out stiff and rigid, and the wings droop as if broken. These slowly vibrate, and then produce a sound loud and clear, like the thrum of a double-bass string. Then the wings move with increased rapidity, and the sound becomes a continuous throbbing hum. It then suddenly ceases, and after a few minutes the same performance is repeated.

Mr. Lord also states that he has seen the males of this species fighting furiously during the pairing season. Ruffing up their necks, with their heads and backs almost in a straight line, and with wings dropped, they circle round and round each other, striking and pecking until the vanquished gives in, and the victor mounts upon a log and proceeds to drum furiously.

Their nest is completed about the end of May, and is always placed under a log on the ground, or at the foot of a bush. It is composed of a quantity of dead leaves, lined with dry grasses, bits of moss, and a few feathers.

Mr. Lord adds that he found at least ten nests of this bird in one swamp near the Spokane Prairies. From ten to fourteen eggs was about the average number; they are described as in color of a dirty white, and without any spots or freckles of a darker shade. The chickens at once leave the nest and follow their mother, who calls them with a clucking sound, in the manner of a Hen, covers them when resting, and uses all kinds of feints and stratagems to lure an intruder from her young, fluttering along close to his feet as if her wings were entirely disabled, and then, when her chickens have had time to conceal themselves, suddenly darting off. When frightened, this Grouse rises with a loud rattling sound; but its natural upward movement is noiseless.

After the chickens are old enough, the flock removes to open hillsides where grass-seed, berries, and insects are in abundance. This Grouse never packs, but remains in broods. In the fall, before they begin to feed on the spruce buds, their flesh is said to be delicious; but after the snow shuts them off from other food they feed on the fir buds, and then their flesh acquires a strong flavor of turpentine.

In the tree this Grouse is not an easy bird to discover; so closely does its plumage resemble the lichen-covered bark that it is difficult to distinguish them, especially as, when alarmed, they crouch down lengthwise with the limb, and thus become concealed.

Genus LAGOPUS, Vieillot

Lagopus, Vieillot, Analyse, 1816. (Type, Tetrao lagopus, L.)

Gen. Char. Nasal groove densely clothed with feathers. Tail of sixteen or eighteen feathers. Legs closely feathered to the claws. The northern species snow white in winter.

The Ptarmigans inhabit the northern regions of both hemispheres, and with the Arctic fox and hares, the lemmings, and a few other species, characterize the Arctic zone. They are of rare occurrence within the limits of the United States, though farther north they become abundant. The species all change to white in winter, except L. scoticus, which appears to be merely a permanently dark, southern, insular form of L. albus. (See Alfred Newton in Proceedings of the Philadelphia Academy, July, 1871, pp. 96, 97.)

Species and Varieties

A. Tail-feathers always with more or less black.

1. L. mutus. Bill small, slender, the length from the nasal groove to the tip decidedly more than the height through the base. Male in winter with a black stripe on the lores.

♂ in summer with uniform black feathers on the breast; autumnal plumage bluish-gray, mottled. Hab. Northern Europe … var. mutus.

♂ in summer without uniform black feathers on the breast. Autumnal plumage orange-rufous. Hab. Northern North America; Greenland; Iceland … var. rupestris.

2. L. albus. Bill large, stout; the length from the nasal groove less, or not more, than the height through the base. Male in winter without black stripe on lores. Hab. Northern Europe and northern North America.

B. Tail-feathers entirely pure white.

3. L. leucurus. Winter plumage wholly white. Hab. Alpine summits of the Western mountain-ranges, from Colorado to Oregon and Washington, and north into British America.

PLATE LXII.

1. Lagopus albus. ♂ Summer. Alaska, 21462.

2. Lagopus albus. ♀ Summer. Labrador, 43468.

3. Lagopus albus. ♂ Winter.

4. Lagopus rupestris. ♂ Winter. 30370.

5. Lagopus rupestris. ♀ Summer. Labrador, 44582.

6. Lagopus leucurus. ♂ Summer. Colorado, 16002.

Lagopus albus, Aud

WILLOW GROUSE; WHITE PTARMIGAN

Tetrao albus, Gmelin, I, 1788, 750 (Hudson’s Bay).—Lath. Ind. Orn. II, 639. Lagopus albus, Aud. Syn. 1839, 207.—Ib. Birds Amer. V, 1842, 114, pl. ccxcix.—Bonap. Am. Phil. III, new ser. p. 393, sp. 313.—Gray, Gen. B. III.—Baird, Birds N. Am. 1858, 633.—Boie, Isis, 1822, 558.—Gray, Cat. B. Brit. Mus. III, 47, 1844.—Bonap. Geog. & Comp. List. B. p. 44, No. 288.—Elliot, Monog. Tetraon. pl.—Coues, P. A. N. S. 1861, 227.—Gray, Cat. Brit. Mus. V, 1867, 80.—Dall & Bannister, Tr. Chicago Ac. I, 1869, 287.—Finsch, Abh. Nat. III, 1872, 62 (Alaska). Tetrao (Lagopus) albus, Nuttall, Man. I, (2d ed.,) 1840, 816. ? Tetrao lagopus, Forster, Phil. Trans. LXII, 1772, 390. Tetrao saliceti, Sabine, App. Franklin’s Narr. 681.—Rich. App. Parry’s 2d Voyage, 347.—Aud. Orn. Biog. II, 1834, 528, pl. cxci.—Sab. App. Frank. Narr. p. 681. Tetrao (Lagopus) saliceti, Swainson, F. Bor. Am. II, 1831, 351.—Lagopus s. Gould. B. Eur. pl. White Grouse, Pennant. Tetrao lapponicus, Gmel. Syst. Nat. I, 751, sp. 25.—Lath. Ind. Orn. II, 640, sp. 12. Tetrao rehusak, Temm. Pig. et Gall. III, 225. Lagopus subalpinus, Nils. Orn. Suec. I, 307, sp. 139. Lagopus brachydactylus, Temm. Man. Orn. III, 328.—Gould, B. Eur. pl. cclvi.—Gray, Gen. B. III.—Bonap. Consp. List. 44, No. 300.

21462 ⅓ ⅓

Lagopus albus.

Sp. Char. Bill very stout. Bill as high as the distance from the nasal groove to its tip. Tail always black, narrowly tipped with white; wing (except upper coverts) pure white.

Summer. Male (43,505, Fort Anderson, September 8; MacFarlane). Head, neck, and jugulum deep cinnamon-rufous; whole upper parts (except wings) paler, more fulvous brown, broadly and closely barred with black. Top of head spotted with black, and the jugulum and neck with scattered bars of the same. Wing, 7.50; bill, .40 from nostril, and .35 deep. Female (53,526, Fort Anderson, June, 1865; MacFarlane). Entire plumage (except wings, tail, and legs) fulvous-buff, heavily spotted and barred above, and regularly barred beneath, with black. Wing, 7.20; bill, .40 by .40.

Winter. Entire plumage, except the tail (which is black with a white tip), immaculate snowy-white; shafts of primaries black. Male (34,968, Northwest R., Labrador; D. Smith). Wing, 7.50; bill, .42 by .45. Female (50,060, Nulato, Lower Yukon, April 12, 1867; W. H. Dall). Wing, 7.50; bill, .42 by .42.

Chick (2,648, Fort Anderson, July, 1864). Prevailing color greenish-buff, tinged with sulphur-yellow on the throat and abdomen, and washed with fulvous on the upper parts. A large oval vertical patch of chestnut-rufous, bordered all round by a black line, which, from the occiput, is continued down the nape in a broad distinct stripe of black. On the upper part of the back this stripe bifurcates, and continues in two broad parallel stripes to the lower part of rump, where they again unite. A black stripe across the wing and one through the eye and auriculars.

Hab. Arctic America from Newfoundland to Sitka.

Lagopus albus.

Habits. Richardson regarded this species as an inhabitant of the fur countries from the 50th to the 70th parallel of latitude, being partially migratory within those limits. It was found to breed among the valleys of the Rocky Mountains, on the barren grounds, and along the Arctic coasts. On the approach of winter it collects in flocks, and retires southward as the severity of the weather increases. They remain, however, in considerable numbers as far north as latitude 67° even in the coldest winters. It was found to be tolerably abundant at the 65th parallel all the year, assembling in vast flocks on the shores of Hudson Bay in the winter time. Mr. Hutchins states that ten thousand of these birds have been captured in a single season at Severn River. Richardson adds that in 1819 these birds made their first appearance at Cumberland House, latitude 54°, in the second week of November, and that they returned to the northward again before the beginning of spring. In the winter they are said to shelter themselves in thickets of willows and dwarf birches, on the banks of marshes and lakes, the buds of the smaller shrubs being the principal part of their food at that season. Denuded sandy spots were their favorite resorts in the daytime, but they passed their nights in holes in the snow. When pursued by sportsmen or birds of prey, they often terminate their flight by hastily diving into the loose snow, working their way beneath its surface with considerable celerity. In thick, windy, or snowy weather they were very shy, perching on the taller willows, where it required a sharp eye to distinguish them from flakes of snow. In the summer season they feed chiefly on the berries of the alpine arbutus and other shrubs and plants, which are laid bare by the thaw, and which do not disappear until they are replaced by a new crop. They incubate about the beginning of June, at which time the females moult. The males assume their red-colored plumage as soon as the rocks and eminences become bare, at which time they are in the habit of standing upon large stones, calling in a loud and croaking voice to their mates, which, still in their white wintry garb, are hidden in the snows below. These birds are more usually in motion in the milder light of night than in the broad glare of day.

Captain Blakiston traced this Grouse across the interior from Hudson’s Bay to near the Rocky Mountains, and obtained a single specimen near Fort Carlton. It does not come down every winter, however, so far south on the Upper Saskatchewan. Near Lake Winnipeg, at Fort Cumberland, and to the eastward, they are common every winter, and numbers are obtained from the shores of Hudson’s Bay. Mr. Ross gives this species as common on the Mackenzie. Mr. Robert MacFarlane found it around Fort Anderson, where, he writes, it was always very numerous in that quarter at all seasons, and generally not difficult of approach. During the breeding-season the males were to be found perched upon trees and stumps in the vicinity of the nest, while the female would rarely leave the latter until almost trodden on. They are also said, by Mr. MacFarlane, to assume their summer plumage earlier than the males, differing in this statement from Dr. Richardson’s. Their nest is always on the ground, and consists only of a few decayed leaves placed in a depression. Sometimes other materials, such as hay, moss, feathers, etc., are found. While incubating, the female occasionally sits so close as to allow herself to be caught, rather than leave the nest.

They begin to nest early in June, varying a little with the season, not commencing so soon where the ground at that period was still covered with snow. Eggs taken from the oviduct were almost invariably pure white in color. In one instance an egg taken from the oviduct of a female, June 5, that had previously deposited eight eggs the same season, was covered with coloring matter or marking so soft as to adhere to the fingers when touched. After the female has once begun to lay, Mr. MacFarlane observed that she deposits one egg each day until the whole number has been reached. This varies from eight to ten.

The males were always observed in the immediate vicinity of the nest, and began to assume their summer moult about the 6th of June, most of their necks at that time being already of a reddish-brown color. The nests were always on the ground, and were mere depressions lined with a few soft materials, generally leaves, occasionally mingled with feathers, hay, etc., the feathers often being their own. The same nest was often made use of in successive seasons. Eggs were found as late as the 24th of June, and the female is supposed to sit about three weeks before hatching. Occasionally eggs were found dropped on the bare ground without any signs of a nest. In one instance the egg was pure white, like one taken from the oviduct. It was found lying on the bare ground, without the least appearance of a nest in its vicinity.

In one instance where a nest was met with, on the banks of Swan River, by Mr. MacFarlane’s party, en route, the female was almost trodden under foot before she fluttered off, when she at once turned about to face her enemies, spreading her wings and ruffling her feathers as if to attack or frighten them away. In another case a nest containing only one fresh egg, in which the female had but just begun to deposit, was found as late as June 25. Other eggs found June 27 contained very large embryos. Another nest, examined a fortnight later (July 10), had in it ten perfectly fresh eggs. Mr. MacFarlane inferred that this nest had been robbed at an early period of the season. This time she apparently made no attempt at another laying.

In several instances where both birds were present near a nest that was taken, the male bird would make his presence known by giving utterance to very peculiar rough notes, indicative of alarm and of distress at the proceedings. In one instance a nest was found in the midst of a clump of very small stunted willows, within thirty feet of the spot where Mr. MacFarlane’s tent was pitched. This was on the 21st of June, but the nest escaped notice until the 22d of July, when the female was almost trodden on as she was sitting on her eggs, where she had probably had her nest during their entire stay. The eggs were warm when taken, and their contents were slightly developed. During the night the male Ptarmigan disturbed the encampment by keeping up a constant utterance of his rough and rather unpleasant notes. In another instance the female fluttered off, calling, and pretending to be badly wounded; while the male bird, in the vicinity, made his near presence known by the loud manner in which he expressed his disapprobation of such proceedings.

In one instance where an Indian had found a nest of this Ptarmigan, which then contained seven eggs, the female was seen, and the notes of the male bird were heard. He placed a snare about the eggs, but on returning to the nest a few hours afterwards, he was surprised to find that six of the eggs had disappeared during his brief absence. He supposed a fox had taken them; but as no egg-shells were left behind, Mr. MacFarlane has no doubt they were removed by the parent birds.

When the young are hatched they follow the parents, both of whom keep about them, and display great courage and devotion whenever there is any occasion, suffering themselves to be very closely approached, and utterly regardless of consequences in their desire to save their young. The latter are very hard to recognize, owing to their close resemblance to the grass, in which they squat, and remain perfectly still.

In September and October of each season these Ptarmigans assemble in large flocks, but during winter seldom more than two or three dozen were ever noticed in single companies. They would often alight and feed in the immediate presence of the men, and would even permit a very near approach. During the winter they were frequently to be met with between Fort Anderson and Fort Good Hope, in especial abundance about the last-mentioned post. As the spring approached, they began to migrate to the north; so that in the summer scarcely a Ptarmigan was to be seen south of Lockhart River, on their usual line of march to that post. In February, 1859, Mr. MacFarlane found them numerous to the very borders of the wooded country, along the banks of the Lower Anderson.

Mr. Donald Gunn states that this Ptarmigan is very seldom to be seen south or west of Lake Winnipeg, but is found in all the country north and east of that lake during the winter season. In the summer they are said to breed around Hudson’s Bay, and during the winter to be found along the whole extent of that bay, especially if the winter is mild. During severe winters they go more inland. The males of this species are said by Mr. Gunn to crow morning and evening in the same manner as the Moor-fowl in Scotland, the tone and notes being very similar. The female is said to lay from ten to sixteen eggs, but the largest number taken by Mr. MacFarlane appears to have been ten. These birds are of great service to the Indians, serving as food when larger game fails; and their feathers are also a considerable article of trade, several hundredweight of them being annually sent to London.

Mr. Dall found this Ptarmigan abundant in Alaska, from Fort Yukon to the sea. In winter they feed exclusively on willow buds, a double-handful having often been found in their crops. As soon as the ground was well covered with snow they appeared on the river in coveys among the willow-thickets. They were rather shy, and on an alarm flew immediately, but without noise. They made regular paths along the banks of the river among the willows, along which they always ran. The Indians took advantage of these to snare them, and caught them by hundreds. They were abundant in the fall and midwinter. In February they gathered in immense flocks, and disappeared, no one could tell where, returning about the middle of March as suddenly as they had gone away, remaining a few weeks, then resorting to the mountains and open country to breed. In 1867 they disappeared February 15 and returned April 1, leaving for the mountains May 3. The following year they left February 10, returned March 21, and left for the mountains April 28, going and coming in large flocks. They begin to moult about the middle of April, the feathers of the head, edges of wings, and upper tail-coverts, changing first. At this time the capillaries in the skin of the abdomen become engorged with serous fluid, and give to the bird a disgusting appearance. Mr. Dall obtained eggs in an open tundra near the mouth of the Yukon in the latter part of June. The female defended her nest bravely, and rather than desert her eggs allowed herself to be torn to pieces by a dog.

Mr. Bannister was also struck with the strong attachment shown to each other by both sexes during the breeding-season. He has known the male bird to sacrifice his own life, rather than desert his wounded mate. He mentions them as common at St. Michaels and the adjoining mainland during the greater part of the year, but especially abundant in the spring, when they are found singly or in pairs all over the country. In the fall and winter they kept more to the thickets of willows. The greater part of them were supposed to have gone into the wooded district of the interior for better shelter and more abundant food.

The eggs of this species vary considerably in length and breadth; they average about 1.85 inches in length and 1.20 in breadth, and are oval in shape, one end a little less obtuse than the other. They are all beautifully variegated and marked with bold confluent blotches of a dark claret color, upon a ground of a deep cream tinged with a reddish shading.

Lagopus mutus, var. rupestris, Leach

ROCK PTARMIGAN

Tetrao rupestris, Gmelin, Syst. Nat. I, 1788, 751 (based on Rock Grouse of Pennant).—Latham, Ind. Orn. II, 1790, 312.—Sabine, Supplem. Parry’s First Voyage, page cxcv.—Richardson, Append. Parry’s Second Voyage, 348.—Aud. Orn. Biog. IV, 1838, 483, pl. ccclxviii. Lagopus rupestris, Leach, Zoöl. Misc. II, 290.—Bon. List, 1838.—Aud. Syn. 208.—Ib. Birds Amer. V, 1842, 122, pl. ccci.—Baird, Birds N. Am. 1858, 635.—Elliot, Monog. Tetraon. pl.—Gray, Cat. Brit. Mus. V, 1867, 92.—Dall & Bannister, Tr. Chicago Ac. I, 1869, 287. Tetrao (Lagopus) rupestris, Swains. F. Bor. Am. II, 1831, 354, pl. lxiv. Attagen rupestris, Reich. Av. Syst. Nat. 1851, page xxix. Rock Grouse, Pennant, Arctic Zoöl. II, 312. Lagopus islandorum, Fab. Prod. der Island. Orn. page 6.—Gray, Gen.—Ib. Cat. B. Brit. Mus. III, 47, 1844. Tetrao lagopus islandicus, Schleg. Rev. Crit. des Ois. d’Eur. p. 76. Tetrao islandicus, Brehm, Eur. Vog. II, 448. Lagopus reinhardti, Brehm. Lagopus groenlandicus, Brehm, Vögelfang, p. cclxiv, note. ? Tetrao lagopus, Sabine, E. Suppl. Parry’s First Voyage, p. cxcvii.—Sabine, J. Franklin’s Jour. 682.—Rich. App. Parry’s Second Voyage, 350. Tetrao (Lagopus) mutus, Rich. F. B. A. II, 1831, 350. Tetrao mutus, Aud. Orn. Biog. V, 1839, 196. Lagopus mutus, Gray, Cat. B. Brit. Mus. 1867, 91 (Ft. Resolution and Ft. Simpson). Lagopus americanus, Aud. Syn. 1839, 207, B. Am. V, 1842, 119, pl. ccc.—Baird, Birds N. Am. 1858, 637.

Sp. Char. Bill slender; distance from the nasal groove to tip (.35) greater than height at base (.27). In summer the feathers of back black, banded distinctly with yellowish-brown and tipped with white. In winter white, the tail black; the male with a black bar from bill through eye. Size considerably less than that of L. albus. Length, about 14.50; wing, 7.50; tail, 4.50.

Female in summer (44,582, Barren Grounds, June 29, 1864; R. MacFarlane). Wings (except upper coverts) and legs white; tail (except intermediæ), black, narrowly tipped with white. Rest of plumage light ochraceous or buff, some feathers tipped with white, and all with broad transverse bars of black, this color prevailing on the dorsal region. On the lower surface the buff bars exceed the black ones in width. Wing, 7.20; tarsus, 1.15; middle toe, .90; bill, .35 by .27.

Hab. Arctic America.

The L. mutus of Europe appears to differ only in its summer and autumnal plumages from the present form, and is then only distinguished by the uniformly black feathers on the breast in the former, and the bluish cast in the latter stage. Those in the winter plumage that we have examined are absolutely identical in size, proportions, and color with the American birds.

Habits. According to Hutchins, this Ptarmigan is numerous at the two extremes of Hudson’s Bay, but does not appear at the middle settlements of York and Severn except in very severe seasons, when the Willow Grouse are scarce; and Captain Sabine informed Richardson that they abounded on Melville Island, latitude 75°, in the summer. They arrived there in their snow-white winter dress about the 12th of May. By the end of the month the females had begun to assume their colored plumage, which was completed by the first week in June, when the change in the plumage had only just commenced in the males. Some of the latter were found as late as the middle of June in their unaltered winter plumage. This Grouse was also found on the Melville peninsula and the Barren Grounds, rarely going farther south, even in the winter, than latitude 53° in the interior, but, on the coast of Hudson’s Bay, descending to latitude 58°, and in severe seasons still farther to the southward. In its general manners and mode of living it is said to resemble the albus, but does not retire so far into the wooded country in the winter. At that season it frequents the more open woods on the borders of lakes, especially in the 65th parallel, but the bulk of this species remains on the skirts of the Barren Grounds. They incubate in June.

Mr. MacFarlane found this species breeding about Fort Anderson, and on the Barren Grounds east of the Horton River. They nest, in a similar manner to L. albus, on the ground, placing the materials in a depression on the ground, and using hay, withered leaves, and a few feathers, and making a rather loose, ill-arranged nest. This is usually placed on an open common, sometimes near the banks of a small stream. They were more early in their breeding than the albus, as young Ptarmigans of a goodly size are mentioned as having been seen June 30. The eggs ranged from four to eight in number.

The female sits very close, and rather than leave will sometimes suffer herself to be taken by the hand. In one instance when a nest was approached, the female crouched as much as possible, in the hope that she might not be noticed, which would have happened had not one of the party observed her eye. Her summer plumage was almost exactly of the same color with the soil, and hardly distinguishable from it. The man was within three feet, and, making a swoop, caught her on the nest.

Excepting in 1862, Mr. MacFarlane did not meet with any of this species west of the Swan River, on his various journeys to Franklin Bay. Every season, almost immediately on leaving the woods fringing Swan River, birds began to be seen as far as and all along the Arctic coast. Although constantly found feeding in large numbers on the Barrens, it was always difficult to find their nests. They were most numerous between Horton River and Franklin Bay, and were frequently seen standing singly, or feeding on the ground, or an occasional pair might be seen, but it was seldom any number were observed in company.

Mr. Dall states that this species was not uncommon in the Romanzoff Mountains, northwest of Fort Yukon, but did not know of its being found farther south or west. It was obtained by S. Weston at Fort Yukon, and among the mountains by Mr. McDougal.

The eggs of this species closely resemble those of L. albus, but are somewhat smaller in size. They measure 1.63 inches in length by 1.18 in breadth, varying slightly in size. Their ground is a deep reddish cream-color, nearly covered by large blotches of a reddish-chestnut, giving a beautifully variegated effect to the whole.

Lagopus leucurus, Swainson & Richardson

WHITE-TAILED PTARMIGAN

Tetrao (Lagopus) leucurus, Sw. & Rich. F. B. A. II, 1831, 356, pl. lxiii.—Nutt. Man. Orn. II, 1834, 612.—Ib. I, (2d ed.,) 1840, 820.—Dougl. Tr. Linn. Soc. XVI, 146. Tetrao leucurus, Aud. Orn. Biog. V, 1839, 200, pl. ccccxviii. Lagopus leucurus, Aud. Syn. 1839.—Ib. B. Am. V, 1842, 125, pl. cccii.—Gray, Gen. III.—Baird, Birds N. Am. 1858, 637.—Bon. Comp. List. 441, No. 291.—Elliot, P. A. N. S. 1864.—Ib. Monog. Tetraon. pl.—Gray, Cat. Brit. Mus. V, 1867, 93.—Cooper, Orn. Cal. I, 1870, 542.

Sp. Char. Male? winter (4,578, Fort Halkett, Liard’s River). Entirely pure white, including the tail. Wing, 6.70; tarsus, 1.00; middle toe, 1.00; bill, .35 by .29.

Summer. Wings, tail, abdomen, crissum, and legs immaculate snowy-white. Ground-color of rest of plumage grayish-white on head and neck and ashy-buff on other portions, finely and rather sparsely sprinkled with black,—more in form of ragged transverse bars anteriorly and on sides. (♀, 16,002, Camp Skagitt, N. W. B., August 16; C. B. Kennerly.)

Hab. Alpine summits of the Western mountains, from lat. 39° in the Rocky Mountains north into British America, and west to the Cascades of Oregon, Washington, and British Columbia.

Habits. This species was first procured by Mr. Drummond, and described by Swainson in the “Fauna Borealis.” Five specimens were taken on the Rocky Mountains in the 54th parallel, and another, by Mr. MacPherson, on the same chain, nine degrees farther north. They were said to have all the habits of the other Ptarmigans, and to inhabit the snowy peaks near the mouth of the Columbia, as well as the lofty ridges of the Rocky Mountains.

We have but little reliable information in regard to the habits and distribution of this species. It seems to be confined entirely to the range of the Rocky Mountains, and to be found only among their highest points, occurring at least as far to the south as Cochetope Pass, in latitude 39°, and extending north to an undetermined extent. Specimens were procured in 1858 by Captain R. B. Marcy, on his march from Fort Bridger, in Utah, across the Rocky Mountains to Santa Fé. They were met with near the summit of the mountains not far from Cochetope Pass.