Eurasian Tree Sparrow Grooming While Sitting On A Tree Branch

passerine bird passerine tree sparrow perching bird eurasian tree sparrow passer montanus sparrow bird birdwatching avian tree branch perched montanus branch habitat wildlife ornithology tree wing woodland fauna small ecology nature animal feather environment outdoor forest southeast asia eurasian natural wild japan passer grooming background sitting park wood asia low angle behavior sky bright nobody tokyo no people life