Yolk androgens do not appear to mediate sexual conflict over parental investment in the collared flycatcher Ficedula albicollis
Mates and females are in conflict over parental care, as it would be favourable for one parent to shift labour to the other. Yolk hormones may offer a mechanism through which female birds could influence offspring traits in ways that increase the relative investment by the male. We studied the role of yolk androgens in mediating sexual conflict over parental care in the collared flycatcher (Ficedu
