As with the other five species of Eudyptes, E. robustus has characteristic yellow plumes or crests on the head (Muller-Schwarze 1984). Eudyptes robustus stands between 50 and 60 cm tall. They are physically similar to the Fjordland penguin (Eudyptes pachyrhynchus). They have a thick heavy bill, with white or pink skin around the base of the beak. They have all black feathers on their cheeks as opposed the white feather tufts on the cheek of the Fjordland penguin. Eudyptes robustus has broad crests that grow from the beak to the back of the head (Penguins Around the World 2000). Males and females are physically very similar, however the male is usually a little taller and weighs a little more.
Range mass: 3000 to 4000 g.
Range length: 50 to 60 cm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: male larger; ornamentation