Species Diversity of Birds at the Wujiang Estuary of Jinmen,Fujian Province

A 2 years with twice a month spotted census of birds was conducted at Wujiang estuary of Jinmen Islet,Fujian Province.A total of 105 species that belong to 30 families were observed.We recorded 5514 individuals,representing 89 species and 27 families in 2000,and 9079 individuals,representing 84 species and 28 families in 2001.The curves of the fluctuation of species and individuals of birds in the 2 years were basically the same,there were two peaks on the curve,one was in spring,and the other was in autumn.The most abundance species were common cormorant (Phalacrocorax carbo),Kentish Plover (Charadrius alexandrinus),Eurasian Curlew (Numenius arquata),Whimbrel (Numenius phaeopus),Ruddy Turnstone (Arenaria interpres),and Dunlin (Calidris alpina),which all transient and wintering shorebirds.The species diversity index was the highest in spring,the second high was in autumn,and the lowest was in summer.