| |
| | Auk - Wikipedia, the free encyclopedia |
 | | Although not to the extent of penguins, auks have to a large extent sacrificed flight, and also mobility on land, in exchange for swimming; their wings are a compromise between the best possible design for diving and the bare minimum needed for flying. |
 | | This varies by subfamily, the Uria guillemots (including the Razorbill) and murrelets being the most efficient under the water, whereas the puffins and auklets are better adapted for flying and walking. |
 | | The three Brachyramphus species, the Marbled, Long-billed and Kittlitz's Murrelets are solitary nesters, choosing old growth forest or tundra in the case of the first two species and high mountains for Kittlitz's. |
| en.wikipedia.org /wiki/Auk (1425 words) |
|