Ключевые слова: alone, animal, avian, beak, beautiful, bergii, bill, biological, biology, bird, birding, birdwatching, black, close, conservation, crest, crested, desolate, ecology, ecosystem, free, freedom, grace, graceful, great, greater, gulf, gull, habitat, lone, lonely, lorn, pillar, post, sea, seagull, sequester, single, sky, solitary, stake, sternidae, stud, tern, thai, thailand, thalasseus, up, water, wing,