Global animal populations are declining, and we've got limited time to try to fix it. That's the upshot of a new report from the World Wildlife Fund and the Zoological Society of London, which ...

As a teenager in the 1970s, I worked on a typical dairy farm in England. Fifty cows grazed on lush pastures for most of their long lives, each producing about 12 liters of milk daily. They were loved ...

Despite decades of independent progress in population ecology and movement ecology, researchers have lacked a theoretical bridge between these two disciplines. "Ecologists have been trying to ...

Every year, as the seasons change, billions of animals embark on journeys to find food, to get to better habitats or to breed. They migrate in groups and as individuals, flying, swimming, crawling and ...