Ancient Murrelet vs Thick-billed Murre
Synthliboramphus antiquus compared with Uria lomvia
Side-by-Side Comparison
| Attribute | Ancient Murrelet | Thick-billed Murre |
|---|---|---|
| Scientific Name | Synthliboramphus antiquus | Uria lomvia |
| Order | Charadriiformes | Charadriiformes |
| Family | Alcidae | Alcidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 27.1 cm (10.7 in) | 41.4 cm (16.3 in) |
| Weight | 208.16666666666666 g (7.34 oz) | 945.75 g (33.36 oz) |
| Diet | -- | -- |
| Clutch Size | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Ancient Murrelet
Least Concern
Thick-billed Murre
About These Birds
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.
Thick-billed Murre
Thick-billed Murre (Brünnich's Guillemot), 39–43 cm, breeds in enormous cliff colonies across the Arctic from Newfoundland to Siberia. Thicker, shorter bill with white gape line. Dives to 200+ m — deepest diver among alcids. Piscivore; takes capelin, cod. Vulnerable to climate change in the High Arctic.