Ключевые слова: background, birds, breeding, butendyks, coast, coastal, dikes, dutch, environment, europe, fence, forbidden entry, friesland, fryske gea, fryslan, grass, grassland, green, habitat, holland, holwerd, landscape, leisure, marine, marsh, marshes, marshland, natural, nature, nature reserve, netherlands, noard, outdoor, outer dike, overflow, pasture, polder, protected, recreation, reserve, rural, salt marshes, scenery, scenic, swallow fields, tourists, traditional, wadden sea, wildlife, world heritage,