Aberdevine (carduelis spinus), also called the siskin, a small European song bird, which breeds in the north of Europe, and visits England, France, and Germany during the winter season only. It somewhat resembles the green variety of the canary bird, with which it is so far connected that it will interbreed i with it in confinement, when the produce is what are known by bird fanciers as mules. J Its length is about 4 3/4 inches, its tail short and forked. Its upper parts are variegated with olive brown, yellow, and pale green, the feathers being edged with yellow; its bill and legs; are light horn brown. Its note is soft and pleasant. It builds in the topmost branches of pine trees, and lays four or five bluish white eggs, speckled with purplish red. Its Latin name carduelis expresses its fondness for the seeds of the thistle.