Ключевые слова: animal, avian, beak, bird, bird eating, birds, black, blue, blue tit, bluetit, branch, chickadee, feather, feeding, fodder rack, forest, garden, great, great tit, green, nature, nuthatch, parus, parus major, perched, sitting, small, songbird, sparrow, titmouse, tree, white, wild, wildlife, yellow,