In group-living vertebrates, dominance status often covaries with physiological
measurements (eg glucocorticoid levels), but it is unclear how dominance is linked to …

Understanding variation in social grouping patterns among animal taxa is an enduring goal
of ethologists, who seek to evaluate the selective pressures shaping the evolution of …

In species exhibiting differential migration by sex and age, understanding what differences
exist, and the adaptive reasons for these differences is critical for determining how …

Research on sociality in temperate ground-dwelling squirrels has focused on female
philopatry and other life history trade-offs, which are influenced by constraints in the duration …

Social environments influence important ecological processes and can determine how
selection acts on traits. Cognitive abilities can shape these social environments and in turn …

Sexual segregation is very common in sexually size dimorphic ungulates and may be the
result of different habitat preferences and/or differential social behaviours of males and …

Sexual segregation is common and can occur when sexes occupy different habitats, and/or
when sexes aggregate assortatively within the same habitats. However, it is rarely studied in …

Sexual segregation has important ecological implications, but its initial development in early
life stages is poorly understood. We investigated the roles of size dimorphism, social …

Wild birds differ in size according to their age and sex, adult birds being larger than
juveniles. In the galliforms, males are larger than females, in contrast to some groups, such …

Fine scale sexual segregation outside of the mating season is common in sexually
dimorphic and polygamous species, particularly in ungulates. A number of hypotheses …