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 interaction seabirds marine life competition behavior feeding frenzy nature's conflict animal coastal habitat antarctic seabird carrion conservation pelagic birds scavengers natural beach scene southern ocean bird ecology petrel species seal pups ecosystem breeding foraging territorial disputes communities atlantic dynamics ecological roles adaptation preservation biology