Elevated yolk androgen levels and the expression of multiple sexually selected male characters.

Abstract excerpt

Maternal hormones in bird eggs modulate not only offspring development, but recently it has also been shown that these effects can persist into adult life. A number of long-lasting effects concern traits of which the expression or development is modulated by androgens. This suggests that the nature of yolk hormone-mediated maternal effects may be organizational. Maternal androgens may therefore play an important...

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