This afternoon I saw two...engaged in a very fierce fight...After a couple of minutes, during which each had the other down on the ground several times, three or four other penguins ran up and apparently tried to stop the fight.
The text is from the book Antarctic Penguins: A Study of their Social Habits, by Dr. G. Murray Levick (1914). Click here to read the book online, or download it free, from the Internet Archive.