Animal, Anthus, Finch, Canary, Wren, Sparrow, Accipiter, alive, animal, background, beautiful, beauty, biodiversity, biology, branch, climate, conservation, cool, day, ecology, environment, environmental, fauna, feathers, green, growth, hopping, horizontal, jumping, kinglet, life, limb, living, natural, nature, olive, organism, ornithology, outdoors, outside, passerine, ruby-throated, scene, scenery, science, small, songbird, tiny, vegetation, vertebrate, warm-blooded, white, wild, wilderness, wildlife, wings, zoology, outdoor, diminutive, achiever, warbler, skill, sport, discipline, twenty-four hours, mood, composure, implementation, nonuniformity, means, direction, life science, improvement, aplomb, feather, heterogeneity, bird, development, division, diversion, fruit, disposition, disfavor, bantam, difference, dissimilarity, oscine, rejection, diverseness, plant part, experience, transformation, person, track and field, growing, situation
Ruby-crowned kinglet (Regulus calendula) landing on a branch on a cool day