Tim Melling – Penguin altercation

Tim writes: penguins usually seem to stick with their own species, even when they nest in the same area.  So this was a rare instance of inter-specific aggression  between a Macaroni and a Chinstrap Penguin.  I took the photograph at the south end of South Georgia where both species breed.  This was at the beginning of the encounter but the Chinstrap soon opened its bill and lunged at the Macaroni.