Measuring stress in animals is important in many ecological, zoological and veterinary
research settings. A common method is to measure plasma levels of glucocorticoid …

Hair analysis is emerging as a popular tool to examine stress and reproduction hormone
levels in wild mammals. The reliability of this approach, however, depends on an …

Explaining variation in the fitness of organisms is a fundamental goal in evolutionary
ecology. Maintenance energy metabolism is the minimum energy required to sustain …

Endocrine data from wild populations provide important insight into social systems.
However, obtaining samples for traditional methods involves capture and restraint of …

Conservation breeding programs typically involve the management of individuals both in
and ex situ, so it is vital to understand how the physiology of managed species changes in …

Rodent populations often undergo large, regular fluctuations. We studied immunological
condition and physiological stress in the common vole and how it varied with environmental …

Quantifying hair cortisol has become popular in wildlife ecology for its practical advantages
for evaluating stress. Before hair cortisol levels can be reliably interpreted, however, it is key …

Island vertebrates that are small on the mainland tend to be larger and exhibit tamer
behavior than their mainland conspecifics—a combined set of characteristics known as …

The black grouse (Tetrao tetrix) is a forest bird species critically endangered of extinction.
Enclosed aviary breeding is among the measures taken to protect the species. Complex …

Rodent populations at northern latitudes undergo cyclic dynamics characterized by high
amplitude interannual fluctuations every 3-5 years. Population cycles have puzzled …