blue tit bird, cyanistes caeruleus, flying away from nest box with fecal sac in beak

animal beak bird birdhouse birds birdwatching blue bluetit box branch brood caeruleus chick city copyspace cyanistes environment faecal family feather feathers fecal feeder fledge fledged fledgeling fledging flight forest garden great habitat house incubation isolated mating moss nature nest nestbox nestling ornithology outdoors parus passerine plumage poo sac sack sitting song songbird sparrow spring suet tit titmouse tomtit town tree urban wild wildlife wing woodland