unresolved. After reexamination of the subfossil material and comparisons with other subfossil bones from the island of Hawaii assigned to the genus Branta, it was redescribed as Branta rhuax in 2013. While a presumed relation between B. rhuax and the shelducks, proposed by Lester Short in 1970, has thus been refuted, bones of a shelduck-like bird have been found more recently on Kaua'i.

Similarly, two bones found on O?ahu indicate