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"Male Black Grouse" by Andy Trowbridge <br />
www.andytrowbridge.com<br />
Male Black Grouse giving higly distinctive mating call, Skelleftea, Sweden, Stock Photo. Black Grouse (Tetrao tetrix) is a large bird in the grouse family.  It breeds across Northern Europe in moorland and bog areas near to forest, mostly boreal.  These birds have a display or lek in early spring.  Black grouse have a very distinctive and well recorded courtship ritual or game. At dawn in the spring, the males strut around in a traditional area and display whilst making a highly distinctive mating call. This process is called a Lek - the grouse are said to be lekking.