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

scavenging elephant seal pup south georgia wildlife conflict seabirds marine life animal behavior nature royal harbor coast feeding competition bird fight predators ecosystem colony beach fauna adaptation scavengers ocean disturbance interaction seals resting seabird activity habitat coastal environment mating ground atlantic natural rights population dynamics biodiversity survival welfare conservation species