Ключевые слова: animal, bird, black, branch, charming, chordate, color, color image, day, dead branch, fruit, full length, great tit, hokkaido prefecture, horizontal, iburi subprefecture, january, japan, many, nature, nut, one animal, orange, outdoors, plant, rear view, red, small bird, stimulation, tomakomaishi, tree, vertebrate, wild bird, winter,