Wiktionary
black-necked swans
n. (black-necked swan English)
Usage examples of "black-necked swans".
Whatever the signs were they were very soon lost as the brig rounded yet another great sea-worn cliff in the direction of Surprise, and Stephen's attention was at once seized by a very noble sight - two black-necked swans flying steadily south, quite low over the water, so low that he could hear the rhythmic beating of their wings.