Animals display remarkable individual variation in their capacity to mount immune
responses against novel antigens. According to the life-history theory, this variation is …

Reference data form the basis for the interpretation of health data that are collected during
clinical examination and laboratory testing. In the decision process of reviewing laboratory …

Parrots of the Wild explores recent scientific discoveries and what they reveal about the lives
of wild parrots, which are among the most intelligent and rarest of birds. Catherine A. Toft …

Changes in the amounts and proportions of leukocytes, known as leucocyte profiles, have
been documented for several bird species and have been used to measure stress levels in …

Background Energy landscapes provide an approach to the mechanistic basis of spatial
ecology and decision-making in animals. This is based on the quantification of the variation …

Background Climate change potentially has important effects on distribution, abundance,
transmission and virulence of parasites in wild populations of animals …

Long‐term data on host and parasite fitness are important for predicting how host–parasite
interactions will be altered in an era of global change. Here, we use data collected from …

Background Parasites can exert selection pressure on their hosts through effects on survival,
on reproductive success, on sexually selected ornament, with important ecological and …

In conditions of deteriorating food availability, seabirds may maximize their breeding
success by increasing reproductive effort, which compromises body condition, stress level …

Abstract Effects of deployment of miniaturised transmitters and loggers have been studied
mainly in diving seabirds such as penguins, and less so in flying seabirds. However, some …