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 …

To understand interspecific patterns in the strength of sexual selection, variation in the costs
and benefits of exercising mate choice needs to be evaluated. One manifestation of sexual …

Many socially monogamous species paradoxically show signs of strong sexual selection,
suggesting cryptic sources of sexual competition among males. Darwin argued that sexual …

We used mark–resight data and amplified fragment length polymorphism (AFLP) markers to
assess movements and gene flow between Central Pacific breeding colonies of the great …

The major histocompatibility complex (MHC) is a polymorphic gene family associated with
immune defence, and it can play a role in mate choice. Under the genetic compatibility …

In socially monogamous species, extra-pair paternity (EPP) is predicted to increase variance
in male reproductive success (RS) beyond that resulting from genetic monogamy, thus …

For vertebrates with temperature-dependent sex determination, primary (or hatchling) sex
ratios are often skewed, an issue of particular relevance to concerns over effects of climate …

A multispecies colony of seabirds was studied on the island of Genovesa, in the northern
part of the Galápagos archipelago, Ecuador, in 2003, to establish baseline health …

Seabirds are often free from blood parasites, and a recent review suggested that
phylogenetic, ecological and life-history parameters can determine the prevalence of blood …

Inbreeding occurs infrequently in most natural populations, with the level of relatedness
between mates potentially being influenced by behavioural mechanisms of mate choice and …