The black grouse or blackgame (Tetrao tetrix) have distinctive red wattle over the eye and show a striking white stripe along each wing in flight. The black grouse is well known for the early morning displays of the male (blackcock). Blackcock gather at clearings in the woods known as 'leks', where they display to attract a female mate (greyhen) by strutting with their tails spread and heads held low. Leks are visited all year round, but the peak of activity is in spring when the females attend and mate with the males. They breed across northern Eurasia in moorland and bog areas near to woodland, mostly boreal. Black grouse have been declining throughout virtually all their European range over the last century.