Editing Rockhopper penguin (section)

==Reproduction==
[[File:FAL-2016-New Island, Falkland Islands-Rockhopper penguin (Eudyptes chrysocome) 02.jpg|thumb|Rockhopper penguin with chicks, New Island, Falkland Islands]]
Rockhoppers are the most widespread crested penguins.<ref name=Hull>Hull, C., Hindell, M., Mar, K., Scofield, P., Wilson, J., & Lea, M. (n.d.). The breeding biology and factors affecting reproductive success in rockhopper penguins Eudyptes chrysocome at Macquarie Island. Polar Biology, 711-720.</ref> Their range goes from the Antarctic front to the South Atlantic and Indian Oceans.<ref name=Hull/> Because of how widespread they are, breeding varies among the penguins in different areas. Northern Penguins begin the mating process two months earlier than Southern ones.<ref name=Jouventin>Jouventin, P., Cuthbert, R., & Ottvall, R. (n.d.). Genetic isolation and divergence in sexual traits: Evidence for the northern rockhopper penguin Eudyptes moseleyi being a sibling species. Molecular Ecology, 3413-3423.</ref> Two eggs are usually laid a few days apart during early November in hope that at least one will survive, and the second egg is usually larger than the first. They will use the same nest as they did in previous years as well. Eggs hatch about a month later and the mother will have food for the chick.<ref name=Bingham>Bingham, M. (n.d.). Rockhopper Penguin</ref>