This bird is hanging around with 2 Canada Geese. I looks like a Greylag only a lot larger and heavier. The bill however is a lot different, larger and uglier with a prominent forehead part that is absent in the true Greylag. The tip of the bill is black on this bird but pinkish white on the true species. When other Greylags are around it becomes very aggressive and will chase them away. Help with ID much appreciated.