Dunnock two or three adjacent female territories overlap one male territory, and so polygyny is favored, with the male monopolising several females. Polygynandry also exists, in which two males jointly defend a territory containing several females. Polyandry, though, is the most common mating system of dunnocks found in nature. Depending on the population, males generally have the best reproductive success in polygynous populations, while females have the advantage during polyandry. Studies have illustrated the fluidity of dunnock mating systems. When given food in abundance, female territory size is reduced drastically. Consequently, males can more easily monopolise the females. Thus, the mating
Everything which is not forbidden is allowed forbidden is compulsory." This quote has been suggested as a principle of physics. The claim that “everything which is not fobidden is allowed” is a principle only of English law does not stand the test of reality. In fact, it is a common principle of liberal democracies. In Germany, it has constitutional rank under Art. 2(1) of the GG which protects the general freedom to act (Allgemeine Handlungsfreiheit), as demonstrated e.g. by the judgment of the Bundesverfassungsgericht known as “Reiten im Walde” (BVerfGE 80, 137). Everything which is not forbidden is allowed "Everything which is not forbidden is allowed" is