Nesting period and breeding success of the Little Egret Egretta garzetta in Pattani province, Thailand

作者：Buatip Somsak^*; Karntanut Wanchamai; Swennen Cornelis

来源：Forktail, 2013, (29): 120-123.

Nesting of Little Egret Egretta garzetta was studied between October 2008 and September 2009 in a colony near Pattani, southern Thailand, where the species is a recent colonist. Nesting was bimodal over a 12-month observation period.The first nesting period started in December in the middle of the rainy season (November-December).The second period started in March during the dry season (February-April). In the second period, nesting began in an area not occupied during the first period but gradually expanded into areas used in the first period. Egg and chick losses were high; the mean number of chicks that reached two weeks of age was 1.0 +/- 1.2 (n = 467 nests), based on nests that had contained at least one egg. Considerable heterogeneity of clutch size and nest success was apparent between different locations within the colony. The main predator appeared to be the Malayan Water Monitor Varanus salvator.

• 出版日期2013-9