The variety of plant life is also habitat for a great variety of birds and mammals. There are some 326 species of birds in Kinabalu Park, including the spectacular rhinoceros hornbill, mountain serpent-eagle, Dulit frogmouth, eyebrowed jungle flycatcher, and bare-headed laughingthrush. Twenty-four birds are mainly found on the mountain. The mountain is home to some 100 mammalian species mostly living high in the trees, including one of the four great apes, the orangutan (though sightings of these are uncommon; estimates of its numbers in the park range from 25 to 120). Other mammals include three kinds of deer, the Malayan weasel (Mustela nudipes), oriental small-clawed otter (Aonyx cinerea), and leopard cat (Felis bengalensis). Endemic mammals include the black shrew (Suncus ater). However, others of its endemisms, such as the Bornean ferret-badger (Melogale everetti) and Rattus baluensis, have also recently been recorded in the nearby Mount Tambuyukon.