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4

Great Cormorant (Phalacrocorax carbo) Alternate name(s): "Black Cormorant", "Black Shag", "Large Black Cormorant", "Great Black Cormorant" German name(s): "Kormoran" Size: 70-102 cm; wingspan: 1.2-1.6 m Weight: 1.2-3.0 kg

Europe: Family Group 4 Family Group 4 Table Great Cormorant European Shag Great White Pelican Thumbnails page Family group table Index of bird names European birds home page

Similar species

Description     Classification     Distribution     Sightings     Photos     Breeding     Nest     Eggs     Behaviour     Food     Call/s

Physical description Click here for a physical description Great Cormorants are large cormorants (details of their size and weight depend on race; birds of nominate race "carbo" found in north-eastern Canada are the biggest and heaviest, while birds found in Germany of race "sinensis" are the smallest and lightest). Their plumage is almost all-black cormorants. The wings are scalloped dark-brown to black. Great Cormorants have white nuptial plumes on their neck, yellow facial skin and a grey bill. There is a white patch on the outside of their thighs. Legs and feet are dark-grey; the tail feathers are long and black. Juvenile Great Cormorants have a grey front and are browner than adults.

Taxonomy, classification See Great Cormorant at Wikipedia .

Range, habitat, finding this species Click here for information on habitat and range The overall distribution of this species can be assessed based on sighting reports submitted by birdwatchers to the ebird.org website. The global distribution of the Great Cormorant is available HERE . There are several races of Great Cormorant that altogether have a very wide-ranging distribution. They are present in most of Europe (except large parts of Scandinavia), in parts of Marocco, Tunisia, Asia Minor, the coastline of much of the Middle East, parts of southern and mid-latitude Asia, including Japan and Taiwan, the river Nile valley and parts of eastern Africa, coastal Arabia and the East coast of North America. There is also a separate population in Australia, New Zealand and parts of PNG (for details see, e.g., Wikipedia). In Europe nominate race "carbo" and race "sinensis" are found - in part permanent residents, while others spend only the winters in Europe. Race "carbo" lives along the Atlantic coatline, towards Iceland, Greenland and North America, while race "sinensis" is found anywhere to the East of the European Atlantic coast, i.e. along the Baltic Sea and in inland parts of Europe. Apart from the Atlantic coastline (of both continental Europe and the British Isles), within Europe the areas where Great Cormorants are found permanently are patchy. The most important areas are the lake district of northern Germany and Poland, the Rhine valley, lakes in the Alps, the Danube valley and parts of Hungary. Only the Atlantic coastline of Norway, the coastal fringe of the Baltic Sea and of the Black Sea and the Caspian Sea have a migratory breeding population. Elsewhere (mainly in Iberia, the British Isles, western France and Italy) they are found mostly in near-coastal areas as winter visitors. Great Cormorants can be found in any type of aquatic habitat (both fresh water and saline), from the open sea and estuaries to rivers, freshwater lakes and large dams.

Sightings Click here for sighting information Race "carbo" M. Eaton reports spotting Great Cormorants, race "carbo", at Skjervoy, near Tromso, Norway, in June 2018. Race "sinensis" H. Dahlem-Senger reports spotting Great Cormorants, race "sinensis", on the river Rhine in the Rheingau, Germany, in March 2013 and on Fehmarn island, Germany, in January 2015. D. Wilczynska reports spotting Great Cormorants, race "sinensis", at Lake Dlugie Wigierskie, Wigry NP, Masurias, Poland, in August 2017. We have previously spotted Great Cormorants, race "sinensis", in Oman. Race "carboides" We have spotted Great Cormorants, race "carboides", in Australia.

Photos

Race "carbo"

IMMATURE/JUVENILE

First-year Great Cormorants on a rock (photo courtesy of M. Eaton)
[Skjervoy, near Tromso, Norway, June 2018]

Race "sinensis"

ADULT

Lateral view of a Great Cormorant (photo courtesy of D. Wilczynska)
[Lake Dlugie Wigierskie, Wigry NP, Masurias, Poland, August 2017]

Lateral view of Great Cormorants perched in a dead tree (photo courtesy of D. Wilczynska)
[Lake Dlugie Wigierskie, Wigry NP, Masurias, Poland, August 2017]

Near-dorsal view of a Great Cormorant drying its plumage (photo courtesy of H. Dahlem-Senger)
[River Rhine, Schierstein, Rheingau, Germany, March 2013]

Dorsal view of a Great Cormorant drying its plumage (photo courtesy of H. Dahlem-Senger)
[River Rhine, Schierstein, Rheingau, Germany, March 2013]

Overview of a small group of Great Cormorants (photo courtesy of H. Dahlem-Senger)
[Fehmarn, Germany, January 2015]

Small flock of Great Cormorants in flight (photo courtesy of D. Wilczynska)
[Lake Dlugie Wigierskie, Wigry NP, Masurias, Poland, August 2017]

IMMATURE/JUVENILE

Somewhat closer view of a small group of Great Cormorants; on the right an immature bird with its characteristic grey front (photo courtesy of H. Dahlem-Senger)
[Fehmarn, Germany, January 2015]

Small flock of Great Cormorants perched in a dead tree; the bird drying its wings near the centre is immature
(photo courtesy of D. Wilczynska)
[Lake Dlugie Wigierskie, Wigry NP, Masurias, Poland, August 2017]

Adult Great Cormorant, front left, with a juvenile behind and a first-year immature bird, front right, all in comparison with a Grey Heron (photo courtesy of M. Eaton)
[November 2017]

Close-up near-frontal view of an adult Great Cormorant with a juvenile behind (photo courtesy of M. Eaton)
[November 2017]

Additional information

More photos of Great Cormorants, race "sinensis", were taken by us in Oman.

Race "carboides"

Photos of Great Cormorants, race "carboides", were taken by us in Australia.

Behaviour

Small flock of Great Cormorants preparing to hunt fish collectively (photo courtesy of D. Wilczynska)
[Lake Dlugie Wigierskie, Wigry NP, Masurias, Poland, August 2017]

Call(s)/Song

For this species we have recorded the following call(s)/song. The interpretation of their meaning is our own; comments and suggestions for improvement are welcome.

grtcorm_20170701.m4a	carboides (NW NSW)	Arrival	© MD
grtcorm_dw_20170815.m4a	sinensis (Poland)	? (flock)	© DW
grtcorm_dw_20170815_1.m4a	sinensis (Poland)	? (flock)	© DW

These pages are largely based on our own observations and those of our contributors. The structure of these bird pages is explained HERE. For more salient facts on any bird species please refer to a field guide.

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