The colonial breeding ardeids also showed the vertical distribution.

鹭类在大屿岛上的繁殖也具明显的垂直分布现象。

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The results show that there is a horizontal distribution in colonial breeding Ardeidae.

结果表明：鹭类在大屿岛繁殖时，具有明显的水平分布特征。

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Of the nests, 83 9% were built by Pycnonotus sinensis and some colonial breeding species including Nycticorax nycticorax , Ardeola bacchus and Bubulcus ibis .

白头鹎和集群繁殖的夜鹭、池鹭、牛背鹭的鸟巢数量占总巢数的83 9%。

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