Partial migration, where only some individuals from a population migrate, has been widely
reported in a diverse range of animals. In this paper, what is known about the causes and …

(Invited Article) Abstract Sexual size dimorphism (SSD) is widespread and variable among
animals. According to the differential equilibrium model, SSD in a given species is expected …

Partial migration, where populations of animals are composed of a mixture of resident and
migratory individuals, is a widespread phenomenon in nature. It has been reported to occur …

Population dynamics and animal behaviour are two subjects that have developed almost
independently, despite widespread acceptance of the idea that they must be related. The …

Protandry, the earlier arrival of males to breeding areas than females, is a common pattern
of sex‐biased timing in many animal taxa (eg some insects, fish, amphibians, reptiles, birds …

The full magnitude and complexity of bird migration have not been possible to grasp until
after the revolutionary discoveries made with the aid of, eg, ringing, systematic field …

A long—standing hypothesis within ecology states that external environmental factors, such
as extreme temperatures, are the primary forces shaping species' biographic ranges. On a …

Bergmann's and Allen's rules state that endotherms should be larger and have shorter
appendages in cooler climates. However, the drivers of these rules are not clear. Both rules …

Partial migration, ie when one fractiofl of fhe population is migratory and the other sedentary,
appears to be a widespread phenomenon among many animal taxa, ranging from insects to …

This study investigates, on a continent-wide scale, which environmental factors associate
with the distributional boundaries of wintering North American avifauna. Distribution and …