Two subspecies of the Great Cormorant breed in Norway, continental Phalacrocorax carbo sinensis south, along Skagerrak coast, and marine P. c. from central Norway northwards. Here we review information existing until 2017 on population status trends, breeding performance diet these two Norway. The most recent national estimates are approximately 2500 (in 2012) 19,000 2012–2014) pairs carbo, res...

Molecular methods allow noninvasive assessment of vertebrate predator-prey systems at high taxonomic resolution by examining dietary samples such as faeces and pellets. To facilitate the interpretation of field-derived data, feeding trials, investigating the impacts of biological, methodological and environmental factors on prey DNA detection, have been conducted. The effect of meal size, howev...

Abstract To further our knowledge of the basis wing-spreading behavior cormorants, we compared feathers cormorants with a diving and dabbling duck. Only cormorant shows division into closed vane next to rhachis an open in periphery feather. Macroscopically, uropygial gland Great Cormorant ( Phalacrocorax carbo ) is bilobed, papilla wears circlet type I. Histologically, consists tightly packed g...

Over the last few decades, population of great cormorant (Phalacrocorax carbo L., 1758) in Europe has been rising. The formation large nesting and roosting colonies relatively small areas, their rapid metabolism excretion significant amounts guano can have a marked environmental impact. This study aimed to investigate how cormorants affect biodiversity density soil mites under breeding colonies...