Cassell's book of birds; vol. 3

by Alfred Edmund Brehm

The ALPINE or GREY PTARMIGAN (Lagopus Alpinus or mutus)—see Coloured Plate [XXVIII].—may be said to vary its plumage every month during the summer. At all seasons, however, the belly, lower tail-covers, exterior wing-covers, quills, and tarsi are white, the tail is black, and the quills streaked with black. About the middle of April other black feathers begin to make their appearance, and the entire plumage becomes, as it were, chequered. By May the head, throat, back, and upper feathers of the wing-covers are more or less variegated with reddish brown and white. As the autumn approaches the feathers gradually change, and by the end of September are of a light grey, dotted with black, and the reddish streaks on the neck and head almost white. In the female these parts are marked with undulating reddish and black lines, the bands being much broader and more clearly defined. In winter the plumage of the male is entirely of a snowy white, except the few black tail-feathers; these latter also show a light border. Occasionally specimens are met with that have retained some of these dark feathers through the cold season.

The Alpine Ptarmigan, or Fjall Ripa, as it is called, is met with in Scotland, and abounds in Scandinavia, in the higher ranges of that peninsula, up to the vicinity of the North Cape.

"The Fjall Ripa," says Professor Rusch, in a letter to Mr. Lloyd, "is found so far south in the province of Christiansand, that its southern limits can certainly be placed in latitude 58° 40´. It occurs wherever the mountains rise above the limits of the dwarf birch, with steep precipices and stone rubble. On mountains in the southern districts of Norway, at the height of 3,000 to 3,500 feet, the sportsman may be tolerably certain of meeting with one pair or more of these birds."

During the year the plumage varies very considerably, being almost in a constant state of moult. By all accounts, this species puts on at least three different dresses in the course of the year. The tail-feathers are always black, and the male has a small black mark from the base of the bill to the temple; but with these exceptions the winter dress of both sexes is white.

The male begins to assume his spring dress about the middle of April, the female a few days later, and usually completes it by the end of May or beginning of June; the information respecting the autumnal moulting is not so precise. In the beginning of September, according to Barth, they have assumed the greater part of their autumnal dress, which about the middle of the same month begins to change into the winter plumage in such a manner that the autumn moulting is simultaneously continued.

The Lagopus Alpinus is not shy in summer, and early in autumn may be approached very closely without taking flight. "Not unfrequently, indeed," says Mr. Lloyd, "the fowler or wayfarer finds himself in the very midst of a brood, without having been previously aware of its presence; but as the season advances the several families 'pack,' and they then become very wary, especially should they have become associated with the Lagopus albus, which is of a much wilder nature, and thus they keep together throughout the winter, and until the month of May, when they separate in pairs. Their favourite resorts are amongst stones and shingle, where they find shelter in bad weather, and from which in their summer plumage they are hardly to be distinguished."

During the summer and autumn they feed on seeds and leaves, especially on those of the crakeberry (Empetrum nigrum), the leaves of which are green all the year round. When heavy storms of snow make these unattainable they devour the tender tops of willow and dwarf birch.

"The easily satisfied appetite of the Lagopus Alpinus," says M. Barth, "coupled with the fact that the crakeberry grows in such profusion everywhere as in many places to cover the whole slope of the fjall, up to near the line of perpetual snow, explains the question why these birds never lack food in the higher regions, where one would least suppose it possible for any living creature to find the wherewithal to sustain existence. The crakeberry plant in some years has so many berries that the ground looks black with them; nevertheless, in those years I never found the berries themselves in the crop of this species, but only the stalks and leaves. After producing fruits in such abundance, the crakeberry plant would seem to require some time for rest, inasmuch as in the succeeding year scarcely a berry is to be seen on it. The Ptarmigan would therefore be very badly off if its taste only permitted it to feed on the berry and not on the stalk—another instance of the wise foresight of Nature. During pairing time the cry of the male is said to resemble the croak of a frog, or the snoring of a man. The female note is a low 'ü-ack, ü-ack.'"

The nest is made among stones, or heather and grass. The eggs are yellowish, with brown spots, and are from eight to fourteen in number. The brood is hatched about the middle or end of June, according to the season. The male is said to remain with his mate during the time of incubation, but as soon as the young are hatched he leaves them with their mother and joins his male companions on the upper part of the fjalls, where his family follow him with their mother as soon as they are sufficiently grown; both parents and brood remain together till the approach of winter, when the various families unite in packs. Mr. Lloyd, however, doubts the truth of the generally-believed fact of the partial separation of the male from his family, and thinks that these packs of males may be such as have been unable to obtain mates.