photo by Greg Hofmann

1/31/2005: One Forster's Tern (Sterna forsteri) catches a fish, and all of a sudden it has company – another tern and two gulls try to harrass the successful tern into dropping its catch. This kind of mid-air piracy is called "kleptoparasitism," and is practiced by many bird species, especially raptors. Jaegers, skuas, and frigatebirds are notorious pirates.