Uria lomvia
| Thick-billed murre | |
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| Adults in breeding plumage | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Charadriiformes |
| Family: | Alcidae |
| Subfamily: | Alcinae |
| Tribe: | Alcini |
| Genus: | Uria |
| Species: | U. lomvia |
| Binomial name | |
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Uria lomvia (Linnaeus, 1758) |
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| Subspecies | |
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U. l. lomvia – (Linnaeus, 1758) |
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| Synonyms | |
U. l. lomvia – (Linnaeus, 1758)
U. l. eleonorae – (Portenko, 1937)
U. l. heckeri – (Portenko, 1944)
U. l. arra – (Pallas, 1811)
The thick-billed murre or Brünnich's guillemot (Uria lomvia) is a bird in the auk family (Alcidae). This bird is named after the Danish zoologist Morten Thrane Brünnich. The very deeply black North Pacific subspecies Uria lomvia arra is also called Pallas' murre after its describer. The genus name is from Ancient Greek ouria, a waterbird mentioned by Athenaeus. The species term lomvia is a Swedish word for an auk or diver. The English "guillemot" is from French guillemot probably derived from Guillaume, "William". "Murre" is of uncertain origins, but may imitate the call of the common guillemot.
Murres have the highest flight cost, for their body size, of any animal.
Since the extinction of the great auk in the mid-19th century, the murres are the largest living members of the Alcidae. The thick-billed murre and the closely related common guillemot (or common murre, U. aalge) are similarly-sized, but the thick-billed still bests the other species in both average and maximum size. The thick-billed murre measures 40–48 cm (16–19 in) in total length, spans 64–81 cm (25–32 in) across the wings and weighs 736–1,481 g (26.0–52.2 oz). The Pacific race (U. l. arra) is larger than the Atlantic race, especially in bill dimensions.
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