An odd goose among a group of barnacles and canadas which had just flown in to Saltholme back pool
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I agree with what David has said in the notes here - it's not possible to be certain of the parentage, but this is a hybrid.
Canada x Greylag Goose is a possibility, but there are other potential hybrid combinations that can't be ruled out (eg. possibly Barnacle x Emperor Goose, or Snow x Canada Goose) so I don't think that it's really possible to do anything more than guess at the ID.
Lat/Lng: 54.6009, -1.2237
OS grid ref: NZ502231