Testosterone and group size in cliff swallows: testing the “challenge hypothesis” in a colonial bird
Testosterone and group size in cliff swallows: testing the “challenge hypothesis” in a colonial bird
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悬崖燕子的睾丸激素和群体规模：测试殖民地鸟类的“挑战假说”
作者：
Linda C. Smith;S. Raouf;M. Brown;J. Wingfield;C. Brown
