Aerial flight and breath-hold diving present conflicting morphological and physiological demands, and hence diving seabirds capable of flight are expected to face evolutionary trade-offs regarding locomotory performances. We tested whether Kerguelen shags Phalacrocorax verrucosus, which are remarkable divers, have poor flight capability using newly developed tags that recorded their flight air ...

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...

Humans and colonial piscivorous birds are often perceived to be in conflict over shared aquatic habitats and fisheries resources in inland lakes. We examined angler perception of birds and the relative abundance of American white pelicans (Pelecanus erythrorhynchos), double-crested cormorants (Phalacrocorax auritus), western grebes (Aechmophorus occidentalis), and boats on two lakes in Saskatch...