Plant, Tree Trunk, Animal, Bird, Wood, alive, animal, background, beauty, biodiversity, biology, bird, birding, birdwatching, branch, chickadee, conservation, crest, crevice, day, dying, ecological, ecology, environment, environmental, fauna, feathers, foraging, gray, grey, horizontal, life, limb, living, natural, nature, ornithology, outdoors, outside, scene, scenery, science, small, songbird, tit, titmouse, tufted, vegetation, vertebrate, warm-blooded, wild, wilderness, wildlife, wings, zoology, outdoor, achiever, skill, discipline, twenty-four hours, end, implementation, dissimilarity, means, direction, life science, improvement, crack, feather, heterogeneity, division, opening, caespitose, passerine, peak, disfavor, difference, nonuniformity, search, oscine, rejection, diverseness, experience, transformation, person, situation
Territorial tufted titmouse (Baeolophus bicolor) with its crest expanded foraging in a dying tree crevice