Antarctic shag (Phalacrocorax atriceps bransfieldensis), pair on nest at breeding site at Jougla Point, Antarctica, Polar Regions

antarctic shag pair nest breeding site jougla point antarctica polar regions bird wildlife nature mating colony seabird marine life eggs parenting courtship feathers coastal andean ecosystem avian habitat animal behavior winter feeding foraging flock conservation natural history environment adaptation migration ornithology biodiversity antarctic peninsula glacial snow ice fog ecosystem dynamics species breeding colony avifauna nest building courtship display nestling aquatic bird marine ecosystem birdwatching