a group of eurasian tree sparrows passer montanus feeding from a homemade bird feeder made of a plastic bottle

animals avian background backyard bird birds birdwatching bottle branches bread care city cold concept conservation craft cute diy downtown eating ecofriendly environment environmental eurasian feeder feeding food forest funny handmade hang homemade hungry idea montanus natural nature passer perched plastic recycle recycling small sparrow sparrows station tree upcycling weather wild wildlife winter