Animal, Blackbird, Agelaius, Crow, alive, American, animal, bark, beak, bill, biodiversity, biology, bird, birding, birdwatching, black, branch, cautious, climate, conservation, crow, day, ecology, environment, environmental, fauna, feathers, gray, grey, horizontal, ice, icy, life, limb, living, looking, natural, nature, ornithology, outdoors, outside, perch, scavenger, science, season, seasonal, tree, vegetation, vertebrate, wild, wildlife, wings, winter, zoology, sensory activity, outdoor, indo-european, plant, achiever, writing, skill, passage, oscine, discipline, twenty-four hours, american english, mood, crystal, implementation, dissimilarity, support, direction, life science, improvement, woody plant, feather, heterogeneity, transformation, division, means, corvine bird, passerine, looking at, mouth, frigid, difference, nonuniformity, west germanic, orifice, germanic, document, look, diverseness, experience, person, english, situation, timid, sensing
Cautious American crow (Corvus brachyrhynchos) looking down from a perch on an icy branch