From 1988 to 1989, observations on the breeding ecology and biology of four species ofegret and heron(Nycticornx nyticorax ,Egretta garzetta,E. eulophotes,Ardeola bacchus)havebeen taken in the Dongzhai bird conservation ,Henan province. The results are as following:E.eulophotes is a new record in south Henan province, breeding in this region for thefirst time.The four species of egret and heron are breeding in harmony of nested seat,nurture andaction in the same area. Most of N. nyticorax use the old nests,t...