Consistent individual differences (CIDs) in behavior are a widespread phenomenon in
animals, but the proximate reasons for them are unresolved. We discuss evidence for the …

Basal metabolic rate (BMR) is the rate of metabolism of a resting, postabsorptive, non-
reproductive, adult bird or mammal, measured during the inactive circadian phase at a …

The Flexible Phenotype attempts a true synthesis of physiology, behaviour, and ecology by
developing an empirical argument that describes the intimate connections between …

Physiological Adaptations for Breeding in Birds is the most current and comprehensive
account of research on avian reproduction. It develops two unique themes: the consideration …

The influence of seasonal changes in temperature and climate on metabolic rates in birds
has been a topic of interest to ornithologists and ecophysiologists for decades (eg, Hart …

The validity of the haematocrit or packed cell volume as an indicator of condition in wild
birds has recently been questioned. We reviewed over 300 published papers on …

The number of studies investigating links between among-individual differences in
metabolic rate (MR) and behavior has grown dramatically in the past several years. A major …

Female birds incur costs associated with increased egg production, including reductions in
chick provisioning ability, in future fecundity, in survival, and in egg and chick viability. It …

Comparative analyses of avian energetics often involve the implicit assumption that basal
metabolic rate (BMR) is a fixed, taxon-specific trait. However, in most species that have been …

When an animal has to meet increased demands on its working capacity, for example, for
thermoregulation or parental care, two strategies are available. The animal can reallocate …