The Macquarie Marshes is situated at the lower end of the Macquarie River in central NSW approximately 100kms north of Warren. It is one of the largest remaining inland semi-permanent wetlands in South-eastern Australia. The Marshes are approximately 100kms long and 25-30kms wide and support a wide range of plants and animals. The Marshes contain extensive areas of common reed, cumbungi, river red gum woodlands, coolabah woodlands and water couch grasslands. The Macquarie Marshes covers about 200,000ha and are recognised on the Ramsar Convention as a Wetland of international importance. The Macquarie Marshes Nature Reserve contains 19,842ha and is managed by the NSW National Parks and Wildlife Service. The remaining 90% is privately managed predominantly for agriculture. The Nature Reserve is surrounded by private land, and it is important to respect this when visiting. The Macquarie Marshes support over 200 bird species, a number of which are reliant on the key breeding habitat within. Some bird species breed in large colonies in the Marsh including Egrets and Ibis.