Northern Rockhopper Penguin vs King Penguin
Eudyptes moseleyi compared with Aptenodytes patagonicus
Side-by-Side Comparison
| Attribute | Northern Rockhopper Penguin | King Penguin |
|---|---|---|
| Scientific Name | Eudyptes moseleyi | Aptenodytes patagonicus |
| Order | Sphenisciformes | Sphenisciformes |
| Family | Spheniscidae | Spheniscidae |
| Conservation Status | Endangered | Least Concern |
| Length | — | 95.0 cm (37.4 in) |
| Wingspan | 20.4 cm (8.0 in) | 64.0 cm (25.2 in) |
| Weight | 2850.0 g (100.53 oz) | 14000.0 g (493.84 oz) |
| Diet | -- | Primarily lanternfish and squid caught during deep dives. Routinely dives to 100-300 meters, sometimes exceeding … |
| Clutch Size | 2 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
King Penguin
Breeds on sub-Antarctic islands with flat or gently sloping beaches. Forages in the Southern Ocean.
Song & Call Comparison
Northern Rockhopper Penguin
King Penguin
Uses individually unique complex calls for mate and chick recognition in noisy colonies. Produces a loud, musical trumpeting. Chick whistles are distinctive per family unit.
Geographic Range & Migration
Northern Rockhopper Penguin
King Penguin
Sub-Antarctic islands including South Georgia, Crozet, Kerguelen, Macquarie, and Falkland Islands.
Conservation Status
Northern Rockhopper Penguin
King Penguin
How to Tell Them Apart
Northern Rockhopper Penguin
King Penguin
Dark blue-grey back with white belly. Vivid orange-gold auricular patches on the sides of the head and upper breast. Silvery-grey upperparts.
Long, slender, slightly decurved bill with orange mandible plates
About These Birds
Northern Rockhopper Penguin
Northern Rockhopper Penguin, 45–58 cm, breeds on Tristan da Cunha and Gough Island in the South Atlantic and Amsterdam Island in the Indian Ocean. Distinctive yellow and black crest, red bill, red eyes. Krill and fish feeder. Endangered; population has declined dramatically due to ocean warming and food shortages.
King Penguin
The king penguin is the second-largest penguin species, known for its striking orange-gold head markings. Unlike most penguins, king penguins do not build nests — they incubate their single egg on their feet. Their 14-16 month breeding cycle is the longest of any penguin species.