The photographer Hsu Jen-hsiu has seen seven such families of the three species happily occupying the same tree! Egrets are monogamous birds, although they often cross breed.
攝影家徐仁修曾見過一株樹上住著七家三種不同的鷺鷥。鷺鷥為一夫一妻制，但同種間常有「偷香」的情形。