After retiring from sports, he became a leading author on the ring ouzel. Red grouse, ring ouzel, wheatear and golden plover may be seen. Ouzel also survives as the name of a relative of the blackbird, the ring ouzel. Seasonal birds include the ring ouzel and the redstart. They are often replaced by the related ring ouzel in areas of higher altitude. Today, bats remain and migrating ring ouzel may occasionally be seen in spring. It is often replaced by the related ring ouzel in areas of higher altitude. The Black woodpecker and the Ring ouzel can also be seen in the park. The ring ouzel ("Turdus torquatus") is a European member of the thrush family, Turdidae.