group of pelicans taking flight.wild flock of common great pelicans taking flight pelecanus onocrotalus pelican colony in dan

animal beak beautiful bird birdwatching black color common danube delta environment fauna feather feathered flight fly grace great green group island lake landscape migratory natural nature orange ornithology outdoor outdoors pelecanus pelican pelicans plumage river seabird sky species spread summer swamp taking water white wild wilderness wildlife wing wings yellow