Coscoroba Swan and Cape Barren Goose

These are sometimes treated together in the tribe Cereopsini separate from other swans and geese. AviList (2025) does not show tribes so it's not clear if this follows that approach or not, but it does list Cape Barren Goose after Coscoroba Swan and before the other swans.

Coscoroba Swan Coscoroba coscoroba

Cape Barren Goose Cereopsis novaehollandiae