Disease-mediated inbreeding depression is a potential cost of living in groups with kin, but
its general magnitude in wild populations is unclear. We examined the relationships …

Abstract Background Although American crows are a key indicator species for West Nile
virus (WNV) and mount among the highest viremias reported for any host, the importance of …

Partial migration—a strategy in which some individuals are resident and others are
migratory within the same population—is widespread among avian species and could play …

Understanding the benefits of cooperative breeding for group members of different social
and demographic classes requires knowledge of their reproductive partitioning and genetic …

Although matings between relatives can have negative effects on offspring fitness, apparent
inbreeding preference has been reported in a growing number of systems, including those …

Abstract New Caledonian crows Corvus moneduloides are the most prolific avian tool users.
It has been suggested that some aspects of their complex tool use behaviour are under the …

New Caledonian crows exhibit considerable variation in tool making between populations.
Here, we present the first study of the species' genetic structure over its geographical …

The ratcheting of evolutionary innovations over time has enabled humans to produce
complex technology. This process requires (1) technological innovations,(2) the accurate …

The general relationship between extrapair copulations (EPC) and extrapair paternity (EPP)
in wild birds is unclear because relatively few studies have collected both types of …

Recent advances in high throughput molecular techniques have allowed the development of
cost-and time-effective libraries of molecular markers, such as microsatellites, for population …