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This Concept Map, created with IHMC CmapTools, has information related to: Ash Rep AnDoyl, Androgens affect size copulatory organ, testosterone upon introduction of new male, changes in season high during breeding season, Androgens including tetosterone, polygynous birds because increase in competition, testes when removed decrease testosterone levels, levels of testoserone, testosterone levels and Plumage color, with high level of breeding repeating each breeding season, stage of breeding cycle after egg laying, testoserone describing challenge hypothesis, Androgens regulate plumage color, stay the same throughout breeding season, Androgens affect Plumage color, competition for females, most fit breeders have highest levels of androgens, fitness auxillary do not breed, testosterone once social status developed, fitness shown in Figure 3, with high level of moulting starts wtih breeding season