The average size of a clutch was 3 for Nycticorax nycticorax and Bubu lcus ibis,and 5 for Egretta garzetta and Ardeola bacchus

• 夜鹭和牛背鹭平均窝卵数为 3个 /巢 ,白鹭和池鹭为 5个 /巢。