Using optimality perspectives is now regarded as an essential way of analysing and
understanding adaptations and behavioural strategies in bird migration. Optimization …

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 …

Recent rapid climatic changes are associated with dramatic changes in phenology of plants
and animals, with optimal timing of reproduction advancing considerably in the northern …

But how to begin a beginning? A strange sound interrupted my tossing. I went to the window,
the cold air against my eyes. At first I saw only starlight. Then they were there. Up in the …

Summary 1 In migratory birds males tend to arrive first on breeding grounds, except in sex‐
role reversed species. The two most common explanations are the rank advantage …

The alteration of the timing of biological events is one of the best documented effects of
climate change, with overwhelming evidence across taxa. Many studies have investigated …

Background Understanding the evolution of migration requires knowledge of the patterns,
sources, and consequences of variation in migratory behaviour, a need exacerbated by the …

Advances in spring migratory phenology comprise some of the most well‐documented
evidence for the impacts of climate change on birds. Nevertheless, surprisingly little …

In many migratory birds, males precede females during migration and arrival at the breeding
sites. Three proximate mechanisms are proposed to explain this phenomenon of protandry …

Protandry refers to the earlier appearance of males before females at sites of reproduction.
Sexual selection has been hypothesized to give rise to sex differences in benefits and costs …