Ключевые слова: acrocephalus schoenobaenus, adult, afternoon, animal, april, aves, bird, bird reserve, bird watching, blue, drove, europe, flora, green, holland, jump, male, migratory bird, naturally, nature reserve, nobody, one animal, ornithology, outdoor, park, passeriformes, passerine, perched sitting, plant, sedge warbler, singing, sky, songbird, springtime, stalk, the netherlands, voice, warbler, wild, wildlife,