Functional significance of variation in egg-yolk androgens in the American coot

Agriculture & Biology

• Fulica americana 100%
• egg yolk 61%
• androgens 59%
• eggs 35%
• chicks 10%
• testosterone 7%
• hatching 6%
• androstenedione 5%
• resource allocation 4%
• biopsy 4%
• social behavior 4%
• embryo (animal) 3%
• hormones 3%
• sampling 1%

Earth & Environmental Sciences

• androgen 83%
• egg 56%
• testosterone 11%
• hatching 10%
• defense behavior 7%
• pond 7%
• intraspecific variation 5%
• resource allocation 4%
• embryo 4%
• fitness 4%
• effect 2%
• resource 2%