It will be noticed that, out of these twenty-one groups into which we may divide the Neornithes Carinatæ of Gadow, only three are not represented in Great Britain, viz. the Sphenisciformes, Psittaci, and Tinamiformes. So that the student of bird anatomy in this country has plenty of chance of making himself acquainted with the main outlines of structure of the entire class of living birds. Out of the thirty-two minor divisions of these birds, no fewer than twenty-one are to be met with in these islands; and of those that are not, some are quite easy to get hold of--a parrot, for instance. [Illustration: FIELDFARES. MISSEL-THRUSH. BLACKBIRD.] Missel-Thrush, or Stormcock. Turdus viscivorus. Upper parts ash-brown; under parts white, faintly tinged with yellow, marked with numerous black spots; under wing-coverts white; three lateral tail feathers tipped with greyish white. Length, eleven inches. * * * * * There are six British thrushes. Of these the missel-thrush and blackbird are residents throughout the year; the song-thrush is also found with us at all seasons, and is a winter songster, but many birds migrate; the ring-ouzel is a summer visitor; the redwing and fieldfare are winter visitors. The missel or mistletoe thrush, or stormcock, is the largest, exceeding the fieldfare, which comes next in size, by at least an inch in length and two inches in spread of wings. This species possesses in a marked degree all the characters that everywhere distinguish the true thrushes, which are world-wide in their range. Theirs is a modest colouring:--olive-brown above, paler and spotted below; a loud and varied song, and harsh cry; a statuesque figure; rapid, startled movements on the ground, with motionless intervals, when the bird stands with head and beak much raised, in an attitude denoting intense attention; and, finally, a free, strong, undulating flight. The missel-thrush inhabits almost the whole of the British Islands, and is most abundant in Ireland. Throughout England and Wales he is fairly common, less common in Scotland, and becoming rarer the farther north we go. He is found in all woods and plantations, but is most partial to wooded parks, orchards, and gardens, which afford him food and shelter throughout the year. He is the hardiest of our vocalists, and is better known as a winter than a summer songster. His song may be heard in the autumn, but from midwinter until spring his music is most noteworthy. Its loudness and wild character give it a wonderful impressiveness at that season of the year. He is not of the winter singers that wait for a gleam of spring-like sunshine to inspirit them, but is loudest in wet and rough weather; and it is this habit and something in the wild and defiant character of the song, heard above the tumult of nature, which have won for him the proud name of stormcock.