Common Shag; Cormorán moñudo

Juveniles. Medium-large black bird, 68–78 cm long and with a 95–110 cm wingspan. It has a longish tail and 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 has a lighter, narrower beak; and the juvenile shag has darker underparts. The European Shag's tail has 12 feathers, the Great Cormorant's 14 feathers.

It feeds in the sea, and, unlike the Great Cormorant, is rare inland