The aim of this review is to consider the potential benefits that females may gain from mating
more than once in a single reproductive cycle. The relationship between non-genetic and …

The application of molecular genetic techniques has revolutionized our view of avian mating
systems. Contrary to prior expectations, birds are only very rarely sexually monogamous …

Animal coloration is one of the most conspicuous aspects of human-perceived organismal
diversity, yet also one of the least understood. In particular, explaining why species have …

Why do males and females frequently differ so markedly in body size and morphology? Sex,
Size, and Gender Roles is the first book to investigate the genetic, developmental, and …

▪ Abstract Extra-pair paternity (EPP) is extremely variable among species of birds, both in its
frequency and in the behavioral events that produce it. A flood of field studies and …

One cannot help being struck with wonder at the vivid pink of 10,000 flamingos rising from
Lake Nakuru or the glowing red gorget of a ruby-throated hummingbird feeding outside the …

Publisher Summary Birds can see ultraviolet (UV) light because, unlike humans, their lenses
and other ocular media transmit UV, and they possess a class of photoreceptor, which is …

Dispersal is central in ecology and evolution because it influences population regulation,
adaptation, and speciation. In many species, dispersal is different between genders, leading …

In approximately 3.2% of bird species individuals regularly forgo the opportunity to breed
independently and instead breed cooperatively with other conspecifics, either as non …

Classical sexual selection theory,,, provides a well-supported conceptual framework for
understanding the evolution and signalling function of male ornaments. It predicts that males …