Definition
A "giant petrel" refers to either of the two species in the genus *Macronectes*: the Southern Giant Petrel (*Macronectes giganteus*) and the Northern Giant Petrel (*Macronectes halli*). These are large, aggressive seabirds found in the Southern Ocean. They are opportunistic feeders, scavenging on carrion, preying on smaller birds, and stealing food from other animals. Think of them as the bullies of the bird world, but also the cleanup crew, ensuring the ecosystem stays balanced. They're like the garbage collectors and enforcers of the Antarctic skies.