Avian eggs contain substantial amounts of maternal hormones and so provide an excellent
model to study hormone-mediated maternal effects. We review this new and rapidly evolving …

Offspring sex ratios in wild bird populations, and the extent to which they vary from the
equality expected by random genotypic sex determination, have received much recent …

Sexual reproduction is a fundamental aspect of life. It is defined by the occurrence of meiosis
and the fusion of two gametes of different sexes or mating types. Sex-determination …

A fully updated guide to the increasingly prevalent use of molecular data in ecological
studies Molecular ecology is concerned with how molecular biology and population genetics …

Recent decades have witnessed an explosion of theoretical and empirical studies of sex
allocation, transforming how we understand the allocation of resources to male and female …

Physiological Adaptations for Breeding in Birds is the most current and comprehensive
account of research on avian reproduction. It develops two unique themes: the consideration …

In species where offspring fitness is sex-specifically influenced by maternal reproductive
condition, sex allocation theory predicts that poor-quality mothers should invest in the …

Yolk androgens affect offspring hatching, begging, growth and survival in many bird species.
If these effects are sex-specific, yolk androgen deposition may constitute a mechanism for …

An important question in ecology is how mechanistic processes occurring among individuals
drive large-scale patterns of community formation and change. Here we show that in two …

Differences in relative fitness of male and female offspring across ecological and social
environments should favour the evolution of sex-determining mechanisms that enable …