Females may choose mates based on the expression of secondary sexual characters that
signal direct, material fitness benefits or indirect, genetic fitness benefits. Genetic benefits …

Males play a variable parental role in reproduction, ranging from no male parental care to
extensive male care. Females may acquire either direct or indirect fitness benefits from their …

Species with paternal care show less exaggerated sexual ornamentation than those in
which males do not care, although direct benefits from paternal care can vastly exceed the …

There is substantial evidence that in human mate choice, females directly select males
based on male display of both physical and behavioral traits. In non-humans, there is …

Carotenoid-based plumage ornaments are typically considered to be sexually selected
traits, functioning as honest condition-dependent signals of phenotypic quality, but few …

Paternity has been hypothesized to be related to the evolution of paternal care because (1)
there should be selection for males not to invest in broods with an uncertain parentage, or …

Good parent and differential allocation models predict relationships between degree of
sexual ornamentation and parental care, but relatively few studies have tested these …

This book is the first comprehensive guide to all the Old World buntings and North American
sparrows. Buntings and North American sparrows offer a great identification challenge …

Plumage coloration may signal individual quality through carotenoid and melanin colour
patterns; novel mechanisms by which structural coloration in feathers could signal individual …

I compared the feather mite (Acari, Proctophyllodidae) loads of moulting birds with features
of the new plumage that they were growing. I examined 21 samples, each sample …