Ключевые слова: animals, behavior, biologist, biology, bird, birds, birdwatcher, birdwatching, discovery, ecologist, environment, exploration, explorer, field, forester, instrument, life, male, man, natural, nature, new, observation, ornithologist, ornithology, outdoors, person, population, researcher, reserve, scientific, scientist, size, species, spotting scope, spyglass, telescope, tool, watcher, wetlands, wild, wildlife, work, zoologist, zoology,