Animal, Finch, Canary, Anthus, Sparrow, alive, animal, background, beautiful, beauty, biodiversity, biology, branch, conservation, day, ecology, environment, environmental, fauna, feathers, green, growth, horizontal, kinglet, life, limb, living, looking, natural, nature, olive, organism, ornithology, outdoors, outside, passerine, ruby-throated, scene, scenery, science, sky, small, songbird, tiny, tree, vegetation, vertebrate, warm-blooded, weather, white, wild, wilderness, wildlife, wings, zoology, sensory activity, outdoor, diminutive, achiever, warbler, skill, discipline, twenty-four hours, implementation, nonuniformity, direction, life science, improvement, woody plant, feather, heterogeneity, bird, development, division, means, plant, looking at, disfavor, bantam, difference, dissimilarity, oscine, rejection, look, diverseness, plant part, experience, transformation, person, fruit, growing, situation, sensing