Singapore lies within the East Asian – Australasian Flyway so the park can expect to receive some special migratory bird visitors. A few surprise visitors have been spotted including the Zanzibar red bishop, a native to Africa, the spotted wood owl, native to the jungle forest in Indonesia, long-tailed parakeet, native in the Andaman Islands and the orange-cheeked waxbill, native to western and central Africa. Birds such as the purple heron, scaly-breasted munia and white-breasted waterhen that are seldom seen in a high-dense urban neighbourhood have also been spotted roosting among the vegetation. The Park was also the home of the Bishan otter family. The Malay Archipelago is one of the world’s greatest biodiversity hotspots, second only to the Amazon, and the tropical rainforest climate is home to an abundance of lush vegetation.