Flock of cute Eurasian tree sparrows, 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 plumage southeast asia taiwan yunlin douliu fly avian brown habitat branch house area housing wild wildlife backyard garden balcony park environment human habitation building puff fluff feather countryside