At other sites veolia has to use falcons , cannons , scarecrows , sonar and other gadgets to scare off the birds that try to scavenge on the rubbish , but not at pitsea , because the surrounding wetlands are among britain 's few remaining breeding grounds of the black-tailed godwit .

在别的地方veolia公司不得不使用能发出炮声的，稻草人，声纳和其他新式小工具来吓跑那些想要以垃圾为食的飞禽，可是这方法在pitsea行不通，因为该地区附近的湿地是黑尾长嘴涉水鸟在英国仅存的几个繁殖地之一。