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a common harrier, Circus cyaneus, that flies over fields and marshes and nests in marshes and open land 白尾鹞 (US and Canadian names marsh hawk, marsh harrier)
The Ouse Washes includes a large floodplain which is looked after by the Royal Society for the Protection of Birds and provides a habitat for the Bewick's swan and whooper swan and wintering birds of prey, including the hen harrier, merlin, peregrine falcon and short-eared owl.