Rockhopper penguin rockhopper penguin’s diet consists of krill and small crustaceans, which may include shrimp, crabs, lobsters or crayfish. They also eat squid and myctophid fish. Rockhopper penguins consume more krill than they do fish; their diet changes during migration and as the seasons change. Rockhopper penguins can be at sea for several days while hunting. They can dive up to for many minutes at a time while searching for prey. Rockhoppers are the most widespread crested penguins. Their range goes from the Antarctic front to the South Atlantic and Indian Oceans. Because of how widespread they are, breeding varies among the
Bird vocalization and prevent an energetically costly fight . In birds with song repertoires, individuals may share the same song type and use these song types for more complex communication. Some birds will respond to a shared song type with a song-type match (i.e. with the same song type). This may be an aggressive signal, however results are mixed. Birds may also interact using repertoire-matches, wherein a bird responds with a song type that is in its rival's repertoire but is not the song that it is currently singing. This may be a less aggressive act than song-type matching. Communication through bird