The warm weather sees the arrival of migrant birds.

候鸟也随着温暖的天气回巢。

It turns this remote area into a fascinating paradise for these migrant birds.

成为一座迷人的候鸟天堂。

To the east of those is the marsh area which attracts a great many migrant birds.

它们的东部是沼泽，这里吸引了许多候鸟。

The blackcap (Sylvia atricapilla), a migrant bird common in Europe that breeds in gardens, once had virtually no avian malaria but a study in 1999 showed nearly 4% had the disease.

黑头莺在欧洲一种常见的候鸟，它们生活在很多公园里，实际上它们曾经并没有禽虐感染，但是1999年的一项研究显示，几乎4%的黑头莺感染了这种疾病。