'What's on today's menu?': Why it's important to study the trophic behavior of local predators

Trophic ecology is the study of the food chain. On Tenerife in the Canary Islands, feral cats feast chiefly on rabbits, mice, rats, and native birds and reptiles. But new research shows that since 1986, the island's wild cats have experienced a significant shift in their dietary composition, which bodes poorly for several native species.