an adult blue tit (cyanistes caeruleus) with one of its young on a bird feeder

cyanistes caeruleus blue tit tits bird birds eurasian fledgling fledged newlyfledged young juvenile baby immature perching feeder waiting colouring markings coloring cap eye stripe wing feathers spring life animal avian ornithology birdwatching wildlife nature garden feeding beak adult one wings compared dusty yellow brown-grey tail fauna feather newly-fledged outdoor perched wild