The highest area in western Anatolia, Uludağ is easily ascended by car or cable-car. The park is about 22 km (14 mi) south of Bursa and is signposted from there. Bursa can be reached by road from Istanbul. The cable-car ascends from Bursa and has an intermediate stop in the alpine meadows of Kadiyayla at about 1,200 m (3,937 ft) elevation. It ends at Sarialan at about 1,630 m (5,348 ft).Habitats of the park range from maquis on the lower slopes, through deciduous woodland and beech and fir forest to alpine meadows at the highest levels. It is a refuge for mountain birds, such as Lammergeier and other vultures, Golden Eagle and more than 20 other raptor species. Other high-altitude species include Alpine Accentor, rock thrushes and choughs. The area is also good for eastern specialities such as Isabelline Wheatear, and, at almost the most westerly points of their range, Red-fronted Serin and Krüper's Nuthatch. The dense fir forest holds Short-toed Treecreeper, Common Crossbill and Tengmalm's Owl, a rare and very local bird in Turkey, as well as the White-backed Woodpecker. The rare and local butterfly, Parnassius apollo graslini, is found on Uludag and the area has much of interest to botanists, with colourful pink primroses, Primula vulgaris var sibthorpii; Leopard's-bane, Duronicum orientalis; crocuses: the purple Crocus siberi and yellow Crocus flavus; and grape hyacinths, Muscari racemosum.