In the Sado Estuary are dunlin, Eurasian curlew, grey plover and common redshank. These attract redshank, dunlin, shelduck, black-tailed godwit, skylark, linnet, rock and meadow pipit. Moorland birds include peregrine falcon, merlin, dunlin, wheatear, short-eared owl and golden plover. These include plovers, the collared pratincole, ruff, dunlin, snipes and sandpipers. Bird species such as the dunlin, the curlew and the lapwing overwinter at Lake Constance. Rottumerplaat is a resting and forage area for sanderling, dunlin and Kentish plovers. For waterfowl, principally curlew, dunlin and shelduck, the site is of national importance. Other species reported from the reservoir include osprey, smew, dunlin and European golden plover. The most numerous species are the western sandpiper, least sandpiper, and dunlin. Seabirds which can be seen include bonxies, twite, dunlin, guillemots, razorbills, skylarks, and fulmars. Other native species include the black stork, common crane, silver seagull, willow grouse, and dunlin. This wader is highly gregarious, and will form flocks with other calidrid waders, particularly dunlin. Production started in August 1978 from the Dunlin Alpha platform. Auk, Brent, Cormorant, Dunlin, Eider, Fulmar and so on. Hybrids between this species and the dunlin are occasionally found in northeastern North America.