Ключевые слова: aggressive, animal, avian, background, backyard, backyard bird, beak, beautiful, bird, black, black mask, bright, brilliant, cardinal, closeup, colorful, crest, crested, crested bird, feathers, male, male cardinal, natural, nature, nature background, northern cardinal, orange, orange beak, ornithology, outdoor, outdoors, plumage, profile, red, red bird, red plumage, redbird, songbird, songster, species, vibrant, whistler, wild, wildlife,