The pine marten (Martes martes) is a rich brown coloured marten with a creamy yellow throatbib. They live in forests where they nest in dens in the ground, and travel through the treetops. They feed principally on field voles, and also on bank voles, small mice, rabbits and, during August and September, honey raided from bumblebee nests. They also eat squirrels and carrion, adapting to what's available. Research Pine Marten