A new study of wild bats reveals that an animal's immune system is shaped by more than its need to fight infections. Researchers from the University of Maryland have found that sex, age and ...

Females travel considerable distances to reach these sites during the mating season and the males compete for the favor of visiting females. "For the first time, we were able to document in detail ...

For decades, the family lives of beluga whales remained largely hidden beneath Arctic sea ice. Unlike many marine mammals that can be observed from boats or shorelines, belugas spend much of their ...

The evolutionary interplay between mating systems and genetic diversity determines population resilience, adaptability and long-term survival. Self-fertilisation reduces effective population size, ...

Traditional explanations for why some animals are monogamous and others are promiscuous or polygamous have focused on how the distribution and defensibility of resources (such as food, nest sites, or ...