Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

scavenging royal harbor south georgia wildlife competition seabirds feeding behavior nature marine life dead seal beach aggression coastal scavengers bird environment animal ecology sea shores predator carrion frenzy conservation natural habitat interaction genus macronectes antarctica seabird colony observation events conflict biodiversity food chain ecosystem pup scene rights ecosystems species shorebirds