Sergey Gorshkov / Arctic Tern (Sterna paradisaea) in defensive display, while other adult is incubating eggs on nest, Volga Delta, Russia

Sergey Gorshkov / European Carp (Cyprinus carpio), Volga Delta, Russia

Sergey Gorshkov / English Perch (Perca fluviatilis) trio, Volga Delta, Russia

Sergey Gorshkov / Wels (Silurus glanis) catfis swimming along river bottom, Volga Delta, Russia

Sergey Gorshkov / Osprey (Pandion haliaetus) chasing Cormorant (Phalacrocoracidae), Volga Delta, Russia

Sergey Gorshkov / Osprey (Pandion haliaetus) bringing back fish to nest, Volga Delta, Russia

Sergey Gorshkov / Osprey (Pandion haliaetus) chasing Cormorant (Phalacrocoracidae) at sunset, Volga Delta, Russia

Sergey Gorshkov / Dalmatian Pelican (Pelecanus crispus) pair, Volga Delta, Russia