Small brown bird chirping on tree with blue sky blurred in background - songbird sitting on top of pine tree

eurasian wren passerine avian bird on a stick chirp troglodytes troglodytes male birdwatching singer tiny watching twigs branch songbird beautiful singing acrobat tree beak vertical tail sit habitat ornithology ecological curious sound fat animal balance wild nature nature wing cute unique agile fast and agile little natural brown tenor wild feather fast sweet forest beautiful pretty song pretty light weight light colorful