You can observe the strict nature reserve's diverse bird species on the shores of Lake Sompiojärvi (a bird-watching tower) and along the marked trails. The number of different waterfowl and waders by Lake Sompiojärvi and in the mire areas is considerable. As regards birds of prey that hunt by day, you can even spot the white-tailed eagle in addition to the rough-legged buzzard, the osprey and the golden eagle. The ptarmigan, which thrives on treeless, open fell areas, is also amongst the species nesting in the area.