One of the world’s major biospheres for water birds, the sanctuary at Prek Toal covers 31,282 hectares at the north end of Tonle Sap Lake and, for the birding enthusiast, provides an excellent opportunity to combine an exploration of the floating lake land lifestyles and the Angkor civilisation with an opportunity to see its inhabitants including Masked Finfoot, Spot billed Pelican, Milky and painted storks, Greater Adjutant, Black headed Ibis, Oriental Darters and Grey headed Fish Eagles among over one hundred and fifty species found here.