Great Cormorant (Phalacrocorax carbo) Science Article 2 abstract A study of the breeding biology of the Great Cormorant (Phalacrocorax carbo sinensis) was carried out during 1993-1998 in the Po River Delta, a major wintering area in northeastern Italy. The first of five colonies was founded in 1993, and breeders increased from 69 pairs in 1994 […]
Tag: Great Cormorant
Reproduction of a Newly-established Population of the Great Cormorant in Northeastern Italy
Great Cormorant (Phalacrocorax carbo) Science Article 2 abstract A study of the breeding biology of the Great Cormorant (Phalacrocorax carbo sinensis) was carried out during 1993-1998 in the Po River Delta, a major wintering area in northeastern Italy. The first of five colonies was founded in 1993, and breeders increased from 69 pairs in 1994 […]
Great Cormorants Phalacrocorax carbo and polych tes: can worms sometimes be a major prey of a piscivorous seabird?
Great Cormorant (Phalacrocorax carbo) Science Article 3 abstract Cormorants mainly eat fish, but remains of other prey are often found in their regurgitated pellets. Such remains are usually considered to stem from prey that were present in the stomachs of fish, eaten by the bird, i.e. from secondary prey. We present several cases were Great […]
Perch fidelity of Cormorants Phalacrocorax carbo outside the breeding season
Great Cormorant (Phalacrocorax carbo) Science Article 14 abstract The perch fidelity of the Cormorant Phalacrocorax carbo sinensis has been studied during migration and winter time on a roost at Lake Geneva, Switzerland. A one-perch fidelity index was computed for 217 individuals. It appears that the perch fidelity increases with the age of the Cormorant, but […]
Perch fidelity of Cormorants Phalacrocorax carbo outside the breeding season
Great Cormorant (Phalacrocorax carbo) Science Article 14 abstract The perch fidelity of the Cormorant Phalacrocorax carbo sinensis has been studied during migration and winter time on a roost at Lake Geneva, Switzerland. A one-perch fidelity index was computed for 217 individuals. It appears that the perch fidelity increases with the age of the Cormorant, but […]
Redistribution of the Cormorant population in the IJsselmeer area
Great Cormorant (Phalacrocorax carbo) Science Article 4 abstract After a period of strong increase and establishment of new colonies in the Cormorant population of the IJsselmeer area, growth levelled off. This occurred after a lake-wide crash in breeding numbers in 1994, following a year with an extremely poor breeding success. In recent years, the Cormorants […]
Environmental determinants of Great Cormorant (Phalacrocorax carbo) distribution in small man-made waterbodies-a case study of gravel pits in southwest France
Great Cormorant (Phalacrocorax carbo) Science Article 5 abstract In the Midi-Pyre
Environmental determinants of Great Cormorant (Phalacrocorax carbo) distribution in small man-made waterbodies-a case study of gravel pits in southwest France
Great Cormorant (Phalacrocorax carbo) Science Article 5 abstract In the Midi-Pyre
Sub-specific differentiation and distribution of Great Cormorants Phalacrocorax carbo in Europe
Great Cormorant (Phalacrocorax carbo) Science Article 1 abstract The use of biometrics for sub-specific differentiation of Great Cormorants Phalacrocorax carbo in Europe was investigated using skins of known subspecies and showed that gular pouch angle is a useful character for assigning individuals to sub-species. Where further measurements of bill depth and bill length can be […]
Solitary foraging in sand pits by breeding Cormorants Phalacrocorax carbo sinensis: Does specialised knowledge about fishing sites and fish behaviour pay off?
Great Cormorant (Phalacrocorax carbo) Science Article 19 abstract Though most Cormorants from the colonies exploiting the lake IJsselmeer area in The Netherlands nowadays have taken up the habit of fishing in large groups, some individuals are still observed fishing solitarily. This phenomenon occurs predominantly during the coldest months at well-defined patches, often located in sand […]