This lively, pretty, amiable bird, also lives in the thickest parts of the fir woods, where it carries on its work of destroying the injurious insects, the number of which is enormous. It used to be thought that the Coal-Tit did harm to the young buds; but this has never been authenticated, and even if it does break one off here and there, the mischief is small indeed, in comparison with the service it performs from one year’s end to the other. Its call is shrill and clear “_ziwih, ziwih, ziwih,_” or “_sitt, sitt_”--or a long-drawn “_seeb, seeb_.” This bird occurs in considerable numbers in Hungary. * * * * * The Coal-Titmouse is one of our common birds in the United Kingdom and it is said to increase yearly, although it is not yet so common as the Great and the Blue Tits. It is a very useful little bird as it feeds its young largely on green caterpillars; but it eats nuts as well as seeds--the seeds of the Scotch fir it is specially fond of. The Marsh-Titmouse--_Parus palústris_--is another resident species in Great Britain, but it is, with the exception of the Crested Titmouse, the least common of our Tits. I have seen it much about our Middlesex gardens, a superficial observer can note the difference between this bird and the Coal-Tit easily because the Marsh-Tit has not the white patch on the back of the head which the Coal-Tit has. It is often seen in orchards where it does good service, but is fond of the neighbourhood of rivers and delights itself among the alder trees and pollarded willows of swampy ground. The Coal Tit is the same size as the Crested Tit. Cheeks white--at the back of the head a white patch, the rest of the head black, so that this colour forms a broad bridle, which recalls that of the great tit. Underneath it is of a dingy white, the mantle a bluish ash-colour with a tinge of green. Wings and tail dark grey, the former having two oblique whitish stripes. The nest is built on the ground, in holes in fir trees under decaying bark, sometimes in holes in the ground--and is formed for the most part of green moss, the interior being warmly lined with hair. The clutch consists of six--sometimes even ten--eggs of a brilliant white finely speckled with rust-colour. THE LONG-TAILED TIT. (_Acredula caudáta._)