Many of Singapore's wild animal species are endangered due to loss of habitat. Teh leopard, banded leaf monkey, slow loris, and giant squirrel were once common in the rain forests but are now nearly extinct. Animals that remain the macaque, colugo (also known as flying lemur), wild pig, and palm civet, many types of reptiles and amphibians, numerous and varied of birds. The Sungei Buloh Wetland Reserve on teh northwest coast of Singapore Island provides an important habitat for migratorhy birds.