aquatic bill bird black black-necked-stork carnivore color colored coloring colors colour coloured colouring colours contrast contrasting ephippiorhynchus-asiaticus feathers glossy Jabiru large-birds long-legged long-necked near-threatened plumage slender stork waders wading-bird water-bird wetlands autumn beak ducks Ecoregion geese and swans grass lake Natural landscape plant vertebrate water Baltic blue fly flying gdynia gull Poland sea sea-gull skies sky wave animal feather group nature Pelecanus erythrorhy swim White pelican wildlife wings zoo beach birds ocean pier port seagull Ardea-alba carnivorous common-egret elegant foliage great-egret greenery Heron large-egret motionless patient plume plumed reflections ripples sharp-beaked solitary-feeder standing-still wader wading waiting water’s-edge white white-egret widely-distributed yellow-billed yellow-eyed animals big colourful pelican pink swimming wing cleaning park pond regal_birds swan