Egrets Flit Over The Lake

In a warm afternoon, I meet few egrets that are looking for food at lakeside in D.R. Park. When I try to approach closer, two of them fly away & flit over the lake. At the background, the old Waller Court Flat is seen. It seems egret able to live with human & we can always see them flying in "V" formation across the sky during morning & evening when driving on the road.