Egrets and herons are important components of the wetland ecosystem in the Taihu Lake.Investigations were conducted of their feeding habitats and preys in 1999 and 2000,revealing how egrets and herons of different species selected their feeding habitats,what they preyed on,and how the pollution of the local environment affected egrets and herons.It was discovered that little egrets and night herons sought for prey in fish ponds and lakes at Yuantouzhu area in Wuxi.On lakes,little egrets usually preyed on sh...