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 royal harbor seabirds wildlife competition battle south georgia feeding behavior marine life nature avian predator carrion coastal habitat foraging aggression interaction animal scavengers shore birdwatching colony ecological carnivorous seals ocean shorebirds natural conservation antarctic region seabird ecology grounds dynamics native species encounter lovers biodiversity kingdom balance