May 2003 – vol. 96, issue 5, pp 241 DECREASE OF BLACK GAME IN SCOTLAND. SIRS,--With reference to the note on this subject (Brit. Birds 21: 206-207), I have had occasion to observe on some moors in Holstein, north Germany, that Black Grouse [Tetrao tetrix] are extremely susceptible to changes in their environment. During a period of fuel scarcity the moors in question were more rigorously exploited for peat fuel than ordinarily, a... This article is only available to subscribed users.To read more, please log in or purchase a subscription.