In (st) age-structured populations, the long-run population growth rate is negatively affected
by temporal variation in vital rates. In most cases, natural selection should minimize …

Socially monogamous birds have provided a major focus of research in the field of sexual
selection, providing insight into the evolution of ornaments, sexual dimorphism and sex …

Life-history strategies are diverse. While understanding this diversity is a fundamental aim of
evolutionary biology and biodemography, life-history data for some traits—in particular, age …

Numerous studies have shown that climate change affects the timing of migration and bird
laying dates, but the resulting changes in the duration of breeding seasons and their fitness …

The disposable soma theory of ageing predicts that when organisms invest in reproduction
they do so by reducing their investment in body maintenance, inducing a trade-off between …

Life‐history and pace‐of‐life syndrome theory predict that populations are comprised of
individuals exhibiting different reproductive schedules and associated behavioural and …

Many studies ask whether young or older males are better at acquiring mates. Even so, how
age affects reproductive success is still poorly understood because male age and mating …

For many species, there is evidence that breeding performance changes as an individual
ages. In iteroparous species, breeding performance often increases through early life and is …

To secure mating opportunities, males often develop and maintain conspicuous traits that
are involved in intrasexual and/or intersexual competition. While current models of sexual …

Reproduction is an energetically costly phenomenon. Therefore, to optimize reproductive
success, male birds invest enough energetic resources for maintaining well-developed …