Earth Science. Rockhopper Penguins. Copyright (C) by Noelene Rout 1st September 2007 All rights reserved. Common name: Rockhopper Penguin. Scientific name: Eudyptes chrysocome. Population: around 4 million pairs. Location: Sub-Antactic island coasts. Size: 18 to 23 inches (45 to 58 … Continue reading Rockhopper! Rockhopper! Penguins!