It was at Thornton Res on 04/03/20
It looks like nothing in my books. The neck has like a pouch under it which confuses me.
Comments
Or...
Or "chinese goose" which has the pouch? https://photostockeditor.com/premium/274038010/the-chinese-goose-is-a-domesticated-goose-descended-from-the-wild-swan-goose
Swan Goose
Looks similar to this https://www.naturespot.org.uk/species/swan-goose
Looks close to this Swan Goose / Greylag hybrid: https://www.hbw.com/ibc/photo/swan-goose-anser-cygnoid/male-martinez-marina-hybrid-greylag-goose-anser-anser
Best wait for second opinions though, I'm not a birder.