Biodiversity Science ›› 1999, Vol. 07 ›› Issue (2): 123-126.doi: 10.17520/biods.1999018

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Population dynamics and nesting of three species of egret on Xiamen Dayu Island

HU Hui-Juan1), CHEN Jian-Rong1), SUN Lei1), WU Guang-Qi1), LU Chang-Yi2), SONG Xiao-Jun2)   

  1. 1) Preparatory Section of Xiamen Dayu Island Egret Natural Reserve ,Xiamen 361004
    2) Enviromental Science Research Center , Xiamen University , Xiamen 361004
  • Received:1998-06-29 Revised:1998-12-20 Online:1999-05-20

This paper deals with the population dynamics and nesting of Nycticorax nycticorax , Egretta garzetta and Ardeola bacchus in the Egret Naturel Reserve on Xiamen Dayu Island. The number of three egret species vary greatly with the season. May , June and July is the peak seasons. When the total birds reach about 5000 in each month. Especially , 5610 birds are sighted in May ,and three species account for 50. 8 % , 32. 0 % and 17. 2 % , respectively. In April , most egrets begin to nest on the branchs of Acacia confusa , and nests come to 6000 during middle May and the beginning of J une. The results show that the three species of egret are all resident and breeding birds of the Island.

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