Great Cormorant, Cormorán grande

The Great Cormorant is a large black bird, from 70 to 102 cm in length and 121 to 160 cm wingspan. It has a longish tail and yellow throat-patch. Adults have white thigh patches in the breeding season. In European waters it can be distinguished from the Common Shag by its larger size, heavier build, thicker bill, lack of a crest and plumage without any green tinge. Great Cormorants are mostly silent, but they make various guttural noises at their breeding colonies.