Billions of animals migrate between breeding and non-breeding areas worldwide. Partial
migration, where both migrants and residents coexist within a population, occurs in most …

Because the maintenance of proper developmental temperatures during avian incubation is
costly to parents, embryos of many species experience pronounced variation in incubation …

Ecologists have long been interested in the role of climate in shaping species' ranges, and
in recent years, this relationship has taken on greater significance because of the need for …

Predicting population dynamics is a fundamental problem in applied ecology. Temperature
is a potential driver of short‐term population dynamics, and temperature data are widely …

A classic example of ecophysiological adaptation is the observation that animals from hot
arid environments have lower basal metabolic rates (BMRs, ml O2 min− 1) than those from …

1. Life-history decisions are strongly affected by environmental conditions. In birds,
incubation is energetically expensive and affected significantly by ambient temperature. We …

Seasonal acclimatization and experimental acclimation to cold in birds typically results from
increased shivering endurance and elevated thermogenic capacity leading to improved …

The rates at which birds use energy may have profound effects on fitness, thereby
influencing physiology, behavior, ecology and evolution. Comparisons of standardized …

Variable environments impose constraints on adaptation by modifying selection gradients
unpredictably. Optimal bird development requires an adequate thermal range, outside which …

Individuals often show consistent differences in risk‐taking behaviours; behaviours that
increase resource acquisition at the expense of an increased risk of mortality. Recently …