feathers Common crane, Grus grus, in Biebrza national park, Poland The black-winged stilt, Himantopus himantopus, Ulcinj Solana Baja Secilic in Montenegro Common crane, Grus grus, in Biebrza national park, Poland Common crane, Grus grus, in Biebrza national park, Poland Juvenile Common Tern, Sterna hirundo, on Lake Skadar in Montenegro. Common crane, Grus grus, in Biebrza national park, Poland Common crane, Grus grus, in Biebrza national park, Poland Grey heron, Ardea cinerea, in Lake Skadar in Montenegro, Balkans. Grey heron, Ardea cinerea, in Lake Skadar in Montenegro, Balkans. Grey heron, Ardea cinerea, in Lake Skadar in Montenegro, Balkans.
