Hybrid Canada/Greylag Geese

The bird below was photographed yesterday from the Ynys Feurig hide at Ynys-hir by Brian Wiley.  Such hybrids have been around for a good number of years now, and often cause confusion among visitors to the reserve as to their identity.
As far as I can see it is a cross between a Canada Goose and a Greylag, although if anyone has any better ideas please let me know.
Brian and I both thought the photograph below might be useful for people looking through the hordes of Canada Geese and seeing something different that doesn't match any other species.