Abstract In contrast to many other water birds, the Great Cormorant, Phalacrocorax carbo (Phalacrocoracidae), shows a typical wing-spreading behavior after diving. This has been linked partial wettability of Cormorant’s feathers based on unusual structure contour feathers. Close rachis, these have closed vane with very densely spaced barbs but an open in more peripheral feather parts. To invest...