Rhinoceros Auklet vs Ancient Murrelet
Cerorhinca monocerata compared with Synthliboramphus antiquus
Side-by-Side Comparison
| Attribute | Rhinoceros Auklet | Ancient Murrelet |
|---|---|---|
| Scientific Name | Cerorhinca monocerata | Synthliboramphus antiquus |
| Order | Charadriiformes | Charadriiformes |
| Family | Alcidae | Alcidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 35.8 cm (14.1 in) | 27.1 cm (10.7 in) |
| Weight | 503.75 g (17.77 oz) | 208.16666666666666 g (7.34 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Rhinoceros Auklet
Least Concern
Ancient Murrelet
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.
Ancient Murrelet
Ancient Murrelet, 24–27 cm, breeds in burrows on North Pacific islands from British Columbia to Japan. Black hood, grey back, white underparts with yellow bill. Nocturnal at colonies to avoid predators. Chicks lead-march to sea within days of hatching — abandoning the nest very early. Planktivore and piscivore.