European Shag
Gulosus aristotelis
Fairly common along seacoasts, nesting on steep cliffs; usually seen as singles or small groups, swimming or flying low over the sea. Does not occur on inland water bodies. Rather large, long-necked dark waterbird; feeds by diving and often leaps a little as it dives. Appreciably smaller and thinner necked than Great Cormorant, with more slender bill. Adult glossy black overall with narrow yellow throat patch; first-year dark smoky grayish overall, variably paler on throat and underparts. By spring, often develops faded pale panel on upperwing.
Identification
This is a medium-large black bird, 68 to 78 cm (27 to 31 in) long and with a 95-to-110-centimetre (37 to 43 in) wingspan. It has a longish tail and a yellow throat patch. Adults have a small crest in the breeding season. It is distinguished from the great cormorant by its smaller size, lighter build, thinner bill, and, in breeding adults, by the crest and metallic green-tinged sheen on the feathers. Among those differences are that a shag is smaller and has a lighter, narrower beak, and the juvenile shag has darker underparts. The European shag's tail has 12 feathers, as do the great cormorant's 14 feathers. The green sheen on the feathers results in the alternative name green cormorant sometimes being given to the European shag.
Taxonomy
The European shag was formerly classified within the genus Phalacrocorax, but a 2014 study found it to be significantly more diverged than the clade containing Phalacrocorax and Urile, but basal to the clade containing Nannopterum and Leucocarbo, and thus classified it in its own genus, Gulosus. The IOC followed this classification in 2021. Gulosus is thought to have split from the Nannopterum-Leucocarbo clade between 9.0–11.2 million years ago.
- Scientific name
- Gulosus aristotelis
- Authority
- (Linnaeus, 1761)
- Order
- Suliformes
- Family
- Phalacrocoracidae
- Genus
- Gulosus
Range and habitat
The European shag can be readily seen among the following locations during the breeding season, between late April and mid-July: Saltee Islands, Ireland; Farne Islands and Isles of Scilly, England; Isle of May, Deerness and Fowlsheugh, Scotland; Runde, Norway; Iceland; Denmark; Faroe Islands; Galicia, Northern Spain; Dalmatia and Istria, Croatia. In April 2017, eight new European shags were born in Monaco.<p>The largest colony of European shags is in the Cíes Islands, Spain, with 2,500 pairs (25% of the world's population).
- Migration
- Complete migrants
Conservation
- Population trend
- declining
Photos
Distribution
Bird Calls
Other Birds
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Mid-sized warbler with a long tail. Dark brown overall, with a white throat and pale eye-line. Found very locally in middle-elevation habitats with a dense ground cover, including bamboo, forest, marsh, and lush grassy areas. Rare species that is not often seen. Most likely to be detected and identified by its distinctive song: a ratcheting up-and-down “dee-ka dee-ka dee-ka…” series which can last for several seconds. Very similar to Evergreen-forest Warbler, and best distinguished by its different song.
Green Jery
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Yellow-legged Buttonquail
Turnix tanki
Hardly bigger than a sparrow, this odd little ground bird has a disproportionately loud song. The booming hoots the female gives during the breeding season are often the easiest way to find this species in the open grassy habitats it occupies. Females are more vividly colored than males, with a bright orange breast and nape, yellow belly, white throat, and speckled gray upperparts. Males have a faded version of the same general color scheme, but have less spotting on the breast and a tan throat.
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