Rhinoceros Auklet vs Great Auk
Cerorhinca monocerata compared with Pinguinus impennis
Side-by-Side Comparison
| Attribute | Rhinoceros Auklet | Great Auk |
|---|---|---|
| Scientific Name | Cerorhinca monocerata | Pinguinus impennis |
| Order | Charadriiformes | Charadriiformes |
| Family | Alcidae | Alcidae |
| Conservation Status | Least Concern | Extinct |
| Length | — | — |
| Wingspan | 35.8 cm (14.1 in) | — |
| Weight | 503.75 g (17.77 oz) | 4750.0 g (167.55 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Rhinoceros Auklet
Extinct
Great Auk
About These Birds
Rhinoceros Auklet
Rhinoceros Auklet, 37–41 cm, breeds colonially in burrows on North Pacific islands from California to Japan. Adults develop a prominent horn at bill base in breeding plumage plus white facial plumes. Nocturnal at colonies. Piscivore; dives up to 50 m for sand lance and herring. Winters at sea.
Great Auk
Great Auk was the Northern Hemisphere's giant flightless auk, 75–85 cm, hunted to extinction in 1844. The last pair was killed on Eldey Island, Iceland. Black above, white below with a white oval eye patch; vestigial wings. Spent most of its life at sea; bred colonially on Atlantic islands and rocks.