The Tai Po Kau Nature Reserve, also called Tai Po Kau Special Area, is a nature reserve in the Tai Po area of the New Territories in northern Hong Kong. The area comprises a dense, hilly woodland with over 100 species of trees and numerous streams and rivers. It is one of the most biologically diverse forests in Hong Kong. It is noted by the Hong Kong Bird Watching Society and others as one of the best locations for seeing forest birds in Hong Kong.