Little shearwater
| Little shearwater | |
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| P. a. elegans | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Procellariiformes |
| Family: | Procellariidae |
| Genus: | Puffinus |
| Species: | P. assimilis |
| Binomial name | |
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Puffinus assimilis Gould, 1838 |
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| Subspecies | |
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The little shearwater (Puffinus assimilis) is a small shearwater in the petrel family Procellariidae. Despite the generic name, it is unrelated to the puffins, which are auks, the only similarity being that they are both burrow-nesting seabirds.
This shearwater has the typically "shearing" flight of the genus, dipping from side to side on stiff wings with few beats, the wingtips almost touching the water, though in light winds it has a more flapping flight than that of its larger relatives. In flight it looks cross-shaped, with its wings held at right angles to the body, its colouration changing from black to white as the black upperparts and white underparts are alternately exposed as it travels low over the sea.
At 25–30 cm (9.8–11.8 in) in length with a 58–67 cm (23–26 in) wingspan, it is like a small Manx shearwater but has proportionally shorter and broader wings, with a pale area on the inner flight feathers. Its bill is more slender than that of Manx, and its dark eye stands out against the surrounding white area.
mtDNA sequence data indicate that the former North Atlantic little shearwater group (Boyd's shearwater, P. boydi and Barolo shearwater, P. baroli) is closer to Audubon's shearwater (Austin 1996, Heidrich et al. 1998), (although many taxonomists now consider them to be distinct species), and Rapa shearwater (P. myrtae), being closer to the Newell's and possibly Townsend's shearwater (Austin et al. 2004). Heinroth's shearwater was also sometimes considered a subspecies of this bird; the relationship between the little and Audubon's shearwater is probably not as close as long believed (Austin 1996, Heidrich et al. 1998, Austin et al. 2001, but see also Penhallurick & Wink 2004, and Rheindt & Austin 2005). The subantarctic shearwater was also considered conspecific (Onley & Scofield 2007, Gill et al. 2010)
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