Eurasian tree sparrow, passer montanus perched on leafless tree branch in urban habitat

sparrow eurasian tree bird animal birdwatching home urban neighborhood perch stand cute passer montanus flock passerine chestnut nape crown cheek species small little plumage southeast asia taiwan yunlin douliu fly avian brown habitat branch house area housing wild wildlife ornithology backyard garden outdoor balcony park environment birding human habitation building