Cassell's book of birds; vol. 3

by Alfred Edmund Brehm

HYBRID GROUSE (Tetrao medius).

The Hybrid Grouse are found wherever the Black Cock and Capercali inhabit the same district, and are particularly numerous in Scandinavia. They closely resemble their parents in general habits, although towards the former of these species they frequently exhibit a very pugnacious spirit during the period of incubation, and constantly do great damage to the sportsmen by attacking and disturbing the Grey Hen when brooding.

"The Capercali," says Mr. Lloyd, "occasionally breed with the Black Grouse, and the produce are in Sweden called Racklehanen. These partake of the leading characters of both species, but their size and colour greatly depend upon whether they have been produced between the Capercali cock and Grey Hen, or vice versâ." Females of these hybrids are much more rare than males, but neither, according to Mr. Lloyd, are common.

HAZEL GROUSE (Bonasia sylvestris).

Professor Nilsson has given us the following account of one of these birds which he kept in confinement:—"He is more dull than lively. For the most part he will sit for a whole day on his perch in a passive attitude, with his tail hanging down, his feathers somewhat ruffled, and his eyes closed. He is, nevertheless, wild and shy. Towards people who approach his coop he evinces more shyness than malice; but to small animals and birds that come near him, or attempt to purloin his food, he displays an exceedingly angry and spiteful temper. About March, when he puts on his beautiful summer plumage, he is more vicious than usual. Towards the end of that month, or early in April, when the fine weather sets in, he commences his spel (call). In this, however, he never indulges at an early hour in the morning, but only in the daytime, both before and after noon. His moulting season commences about July, and continues for a long period. His food consists of whortle-berries, and other forest berries when obtainable, but he is also fond of apples chopped up small, cabbages, and various vegetables, as well as of barley and the seeds of the spruce pine."

THE HAZEL GROUSE.

The HAZEL GROUSE (Bonasia sylvestris), a third species, represents a group that have their tarsi only partially feathered, and their toes quite bare. These birds have the tail composed of sixteen feathers, and rounded at its extremity, while the plumage on the head is prolonged into a crest. The sexes are very similarly coloured, and of about the same size. The plumage on the mantle is spotted reddish grey and white, most of the feathers being also delicately pencilled with undulating black lines. The reddish grey upper wing is enlivened with white streaks and spots; the throat is spotted brown and white. The quills are greyish brown, dotted with reddish white on the narrow outer web, and the blackish tail-feathers dotted with grey, those in the centre being marked with reddish brown. The eye is rust-brown, the beak black, and the bare part of the foot greyish brown.

The length of the male is from seventeen to eighteen inches, and the breadth from twenty-three to twenty-five inches; the wing measures seven and the tail five inches; the female is about one-fifth or one-sixth smaller than her mate. The habitat of this species extends from the Alps to the extreme north of Europe, and from Scandinavia to Eastern Siberia. Extensive forests of oak, beech, alder, and hazel are the situations it prefers, whilst it almost entirely avoids fir and pine woods; for this reason, it is by no means equally spread over this portion of the European continent, being numerously met with in a large part of Scandinavia, Russia, and Siberia, whilst in Austria, Bavaria, Bohemia, and Silesia it is comparatively rare, and in Northern Germany quite unknown. In certain districts the Hazel Grouse remains within its forest home throughout the entire year, and in others wanders to a short distance in search of berries. These expeditions are made by the male birds alone, and they usually return within a month to their former haunts. Leyen informs us that the retreats chosen by these birds vary with the different seasons of the year—that in May, June, and July they seek the borders of the forest, and in August some retire within the most sheltered nooks of its interior to subsist upon berries, while others wander over the country in the manner above described. In September they again seek the brushwood, and in winter make their home within their favourite forests. In Switzerland they appear to prefer the wooded tracts of the Alps, and are very rarely seen upon the plains that lie beneath. They frequently associate with the Capercali, but often venture higher than that bird. In the more northern parts of Europe, they are also met with in mountainous districts, and in Scandinavia are especially numerous at the foot of the Northern Alps.