Most of the forest birds are species living in coniferous forests, such as Bramblings, Eurasian Siskins and Tree Pipits. Bird species favouring old forests are encountered in the north relatively often. The old forest species include Western Capercaillie, Siberian Tit and Siberian Jay.
Generally, the number of species decreases towards the north. However, the number of mire bird species, especially waders, increases as we move further north. Especially the Southern Lapland aapa mires and northern palsa bogs are valuable bird areas. They provide breeding areas for example for Red-throated Divers, Jack Snipes, geese, Bar-tailed Godwits and Peregrine falcons. The diversity of the northern mires and the abundant insects during breeding provide good conditions for breeding and nesting. On the fell heathlands there are Eurasian Dotterels, Eurasian Golden Plovers, Meadow Pipits and Red-throated Pipits, among others. Only a few species of birds, such as the Rock Ptarmigan and Snow Bunting live on the highest bare fell tops.
Arctic seas provide food sources and breeding grounds for seabirds. Of these, many species, such as the puffins, breed in bird mountains in large colonies.