Dark-eyed junco standing on a branch in an autumnal environment

autumn darkeyed dark eyed junco junco dark common environment close up branch bird wing north america variable coloration long tail beauty watching head spring beautiful black small bill gray brown passeriformes emberizidae wilderness perched eyed songbirds feathers wild wildlife animal nature avian fauna hyemalis ornithology birdwatching songbird tree sparrow birding beak feather perching small isolated stump