The Dwarf Fly-catcher is found extensively throughout Poland and almost the whole of Germany, where it seems to prefer the shelter of the beech-woods, living principally in the summits of lofty trees, and rarely approaching the vicinity of man or descending to the ground. Its call is generally a loud piping note; but the song varies so considerably in different individuals as to be sometimes almost unrecognisable. The nest is placed either in a hole or upon the branch of a tree, at some distance from the trunk: it is formed of slender blades of grass vegetable fibres, green moss, or similar materials, lined with wool and hair. The brood consists of four or five eggs, of a greenish white, marked indistinctly with light rust-red patches. Both parents assists in the work of incubation, and exhibit extraordinary attachment to their young; the male bird, however, devotes himself principally to tending and entertaining his mate, whilst she undertakes the main part of the building operations. No sooner are the nestlings capable of supporting themselves than they leave their parents, and retire into the depths of the forests, where they remain until their winter migrations. From the day when the parent birds are separated from their families, their nature seems to undergo a complete change, and they at once assume a quiet, inactive deportment, that strongly contrasts with their previously sportive, busy habits. Count Gourcy, who reared many of these Dwarf Fly-catchers, tells us that they were readily tamed, and soon learnt to know him, welcoming his approach to the cage by flapping their wings and waving their tails above their heads. They bathed freely, and devoured insects in large quantities, eagerly snapping at any fly that was unlucky enough to approach too near.
The SILK-TAILS (Bombycillæ) possess a compact body, short neck, and moderate-sized head. Their wing, in which the first and second quills are longer than the rest, is of medium length, and pointed at the extremity; the tail is short, and composed of twelve feathers; the straight, short beak is broad, much compressed at its base, but raised and narrow at its tip, the upper mandible being longer and broader than the lower one, arched at its culmen, and slightly hooked at its extremity, which is visibly incised. The feet are short and powerful, and the exterior and centre toe connected by a fold of skin. The soft silky plumage upon the head is prolonged into a crest, and some of the wing and tail feathers terminate in horn-like laminæ. The coloration differs but little in the two sexes.
THE EUROPEAN OR COMMON SILK-TAIL.
The EUROPEAN or COMMON SILK-TAIL, BOHEMIAN CHATTERER, or WAX-WING (Bombycilla garrula) is eight inches long and thirteen and a half broad. The plumage is almost entirely reddish grey, darkest upon the back, and shading into greyish white beneath; the brow and rump are reddish brown; the chin, throat, bridles, and a streak over the eyes black; the primary quills are greyish black, spotted with gold on the tip of the outer, and edged with white upon the inner web; the secondaries are furnished with parchment-like or horny plates at their extremities, which are bright red; the tail-feathers are blackish at their lower portion, light yellow towards their extremities, and terminate in horny plates, resembling those upon the secondary quills. In the female the colours are fainter, and the horny appendages much less developed than in the plumage of her mate. The young are almost entirely dark brown, with light edges to many of the feathers; the brows and a stripe that passes from the eyes to the back of the head, a streak across the light reddish yellow throat and the rump are whitish, while the lower tail-covers are of a dusky rust-red.
THE COLLARED OR WHITE-NECKED FLY-CATCHER (Muscicapa albicollis).
