Ключевые слова: backwater, behavior, bird, bird guide, birding, birding tour, black tern, bog, bulrush, butomus umbellatus, cane, chlidonias nigra, feeding behavior, fen, flood plains, flow, flowering rush, gathers food, hag, lake, letch, mire, morass, morwennol, moss, ooze, oozes, orn tern, ornithology, pond, purgatory, quag, quagmire, reed, rush flower, sea bird, sea swallow, seaswallow, slough, slump, sterna, study birds, swampland, tarrock, tern, wading bird, wash, wasteland, watching bird, wetland marshes, young,