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

elephant seal scavenging royal harbor south georgia wildlife competition seabirds marine life pup carcass aggression nature colony feeding frenzy coastal habitat predator scavenger animal behavior ecological interactions birdwatching rights ecosystem organic matter scavengers biodiversity cold weather island shore natural history bird species biology mating rituals survival habits conservation ocean preservation