中文摘要：

为了填补斑背大尾莺食性研究的空白和比较其繁殖期和非繁殖期是否有食性差异,于2011年4月繁殖期,在江西南矶湿地用望远镜观察和录像机拍摄斑背大尾莺亲鸟育雏行为,记录育雏食物的种类和数量;在11月秋季非繁殖期,斑背大尾莺专项环志过程中采集7只意外死亡的个体,进行实验室胃容物解剖分析。两种分析方法分别得出：1）春季取食动物性食物,主要有直翅目蝼蛄科成虫或幼虫、鳞翅目成虫或幼虫、蜻蜓目的成虫,蛛形纲的小型蜘蛛;2）秋季食物由动物性食物（70.24%）和植物性食物（29.76%）组成,动物性食物主要为鞘翅目、直翅目、蜻蜓目、鳞翅目、蜘蛛目等节肢动物,植物性食物为一些植物种子和少量的叶片组织。本研究表明,繁殖期和非繁殖期斑背大尾莺食性有差异,这种差异性是随季节变化生境中的食物组成不同,及育雏期雏鸟需高蛋白营养食物而导致的。

英文摘要：

The feeding habits and food composition of marsh grassbird Megalurus pryeri in Nanji Wetland National Nature Reserve （Jiangxi province） were investigated during breeding season （April, 2011） and non-breeding season （November, 2011）. The brood behavior of parent birds was observed by using binoculars and cameras in breeding season, and the stomach contents of 7 dead individuals collected from bird banding in non-breeding season were examined also. The results showed that the marsh grassbird mainly eat arthropods including dragonfly insects, spiders, imago or larva of Grhllotapidae （mole crickets） and Lepidoptera insects in breeding season. While the diet was made up of both arthropods （70.24%） and vegetation （29.76%） such as Orthoptera, Coleoptera, Odonata, Lepidoptera insects, spiders and seeds, foliage in non-breeding season. In conclusion, the feeding habits of mash grassbird are different in breeding and non-breeding season, and this difference is due to seasonal changing of food composition in the habitats and that the nestlings need higher protein nutrition food.