Southern giant petrel (Macronectes giganteus) white morph, and chinstrap penguins (Pygocelis antarctica), NB: penguins standing their ground against the petrel, antarctica, Southern Oceanl

aves sphenisciformes spheniscidae bird birds penguin penguins oceanic marine sea flightless flight less sub antarctic subantarctic adult adults coastal coast shore beach group groups social groups petrels procellariidae procellariiformes threatening behaviour behavior