Brambling

The brambling is similar in size and shape to a common chaffinch. Breeding-plumaged males are very distinctive, with a black head, dark upperparts, an orange breast and a white belly. Females and younger birds are less distinct and more similar in appearance to some chaffinches. The species has also been called the cock o' the north and the mountain finch, and it is often seen in very large flocks. (Wikipedia, general species account)

In the breeding season it is widespread through the forests of northern Europe and east across the Palearctic, favouring open coniferous or birch woodland. It is almost entirely migratory, wintering in southern Europe, North Africa, northern India, northern Pakistan, China and Japan, and it strays into Alaska on migration. In winter in Europe it forms large flocks, sometimes of thousands or millions of birds, especially where beech mast is abundant. The global population is about 100–200 million, with a decreasing trend. (Wikipedia, general species account)