Extreme environmental variation sharpens selection that drives the evolution of a mutualism

Evolution of an avian pigmentation gene correlates with a measure of sexual selection

Participation costs dismiss the advantage of heterogeneous networks in evolution of cooperation

A new Chinese specimen indicates that ‘protofeathers’ in the Early Cretaceous theropod dinosaur Sinosauropteryx are degraded collagen fibres

Floral reward production is timed by an insect pollinator

Genetically resistant sheep avoid parasites to a greater extent than do susceptible sheep

Hunting to extinction: biology and regional economy influence extinction risk and the impact of hunting in artiodactyls

Generalization of learned predator recognition: an experimental test and framework for future studies

Cooperation is less likely to evolve in a finite population with a highly skewed distribution of family size

Do constructional constraints influence cichlid craniofacial diversification?

Phenotypic determinants of individual fitness in female fur seals: larger is better

Shell bone histology indicates terrestrial palaeoecology of basal turtles

Female extrapair mate choice in a cooperative breeder: trading sex for help and increasing offspring heterozygosity

Context dependence in the coevolution of plant and rhizobial mutualists

Rhesus monkeys correctly read the goal-relevant gestures of a human agent

An addendum to ‘Songbird migration across the Sahara: the non-stop hypothesis rejected!’