Maternal yolk testosterone in canary eggs : Toward a better understanding of mechanisms and function /

Míreanna Comhchosúla

• Hatching order explains an extrapair chick advantage in western bluebirds /
• Yolk androstenedione, but not testosterone, predicts offspring fate and reflects parental quality /
• Food limitation in asynchronous bluethroat broods : Effects on food distribution, nestling begging, parental provisioning rules /
• Manipulation of male attractiveness induces rapid changes in avian maternal yolk androgen deposition /
• Hatching asynchrony is an individual property of female Ural owls which improves nestling survival /