I don’t know much about the beautiful rooster but the magnificent bull is a photograph of a wonderful painting by the South African artist Leigh Voigt from a book about the Zulu Nguni cattle, called The Abundant Herds . The book is the result of the collaboration of scholars, researchers and writers over an extended period of time. The many paintings reproduced in the book are accurate depictions of the colour patterns of the cattle. I  once saw a similar bull in a herd of cattle in the green hills of  Zululand. Would love to go back for another look!