Imperial Shags (Phalacrocorax (atriceps) atriceps) at breeding colony on small islets off the city of Ushuaia, Argentina, South America

imperial shags breeding colony ushuaia argentina south america nesting season rocky islets birds wildlife maritime habitat coastal ecosystem animal behavior seabirds nests colony dynamics population natural habitat marine life avian community shorebirds feeding courtship reproductive behavior nesting sites wildlife observation biodiversity animal migration ecological balance conservation habitat protection birdwatching coastal environment pelagic birds natural beauty behavioral ecology striking patterns rocky outcrops breeding grounds seasonal activity wildlife research ornithology habitat diversity animal interactions nesting habits juvenile birds mating season environmental awareness colony structure flocking behavior