Sand fiddler crabs that reside in a burrow usually prevail if challenged by another, intruding crab, provided their claw pinching strength is similar to that of the competing crab, a study suggests.

As part of a national drive to count the UK's breeding seabirds, this summer a hardy band of fieldworkers will be searching two Pembrokeshire islands, Skokholm and Skomer, for the most mysterious ...

Burrowing owls aren’t your average owls: They don’t live in trees, and they’re not nocturnal. They make their nests underground — usually in abandoned rodent burrows — and are active both day and ...