Should another male appear, nothing can exceed the rage of the jealous occupant, who pursues the intruder from one tree to another with furious indignation, and only leaves him after having inflicted a considerable amount of very severe chastisement for the liberty he has taken. The song of this species is somewhat peculiar, though we cannot exactly say that its tones are musical, being rather monotonous and shrill, yet still, to our mind, far from unpleasing. The nest, which may really be called a work of art, is formed of the fine roots of plants or blades of grass, and bits of hay. The interior is lined very delicately with hair or feathers, and the little structure is generally buried in the thick foliage of a tree or shrub. According to Hoffmann, pear-trees are preferred, but it will build upon apple, cherry, and, we believe, pine trees, while in Spain it is most fond of settling upon the boughs of the orange and citron. The brood consists of from four to five small, blunt-shaped eggs, of a dirty-white or greenish colour, marked principally at the broadest end with pale brown, red, reddish-grey, or purplish-black spots, dots, or streaks. In Spain we have found newly-laid eggs from April to July. It is probable that these birds breed twice in the year. The nest of the Girlitz is not always very easily to be found, but if sought for carefully its situation will be betrayed by the female; the latter is fed by her mate during the whole period of incubation, and when hungry expresses her wants by calling to her little companion, so that any one wishing to discover their retreat needs only to stand under the tree and watch for the return of the male bird. The mother is very faithful to her little charges, and sits for about ten days upon her eggs. As soon as the young leave the shell they also call for food with a chirping kind of sound, and soon becoming weary of the nest, frequently leave it before they are really strong enough to do so. The parents feed them for a considerable time, and will even bring them food if they are confined in a cage placed near the tree--indeed, the latter is a very convenient plan by which to secure proper nourishment for the little prisoners until they have attained their full strength. The Girlitz feeds chiefly on all kinds of seeds, and may be kept when tame upon rapeseed, poppy-seed, or millet; water is indispensable. These birds are well adapted for a cage, and are very social. In Spain, when the breeding season is over, they assemble in large flocks at the commencement of autumn, and during such times associate in some degree with Goldfinches, Sparrows, and Fieldfinches. They are eagerly pursued by most of the smaller birds and beasts of prey, and the young not unfrequently fall victims to these marauders. They are caught by the Spaniards in great numbers and brought to market, where they are purchased both for the cage and the kitchen. In Germany the Girlitz is but little molested. In Spain