Red deer have a stronghold on the moor and can be seen on quiet hillsides in remote areas, particularly in the early morning. The Emperor of Exmoor, a red stag (Cervus elaphus), was Britain's largest known wild land animal, until it was killed in October 2010. The moorland habitat is also home to hundreds of species of birds and insects. Birds seen on the moor include merlin, peregrine falcon, Eurasian curlew, European stonechat, dipper, Dartford warbler and ring ouzel. Black grouse and red grouse are now extinct on Exmoor, probably as a result of a reduction in habitat management, and for the former species, an increase in visitor pressure.