Originally Posted by albional
I have taken the liberty to copy your query onto the Upton Warren Worcestershire Forum as I know there are many knowledgable and helpful birders on that site.
I'm sure they will come up with an answer for you
Info from Rob one of the birders at UW on your Barnacle Goose sighting ----
There is one reported today at Grimley together with a Ross' Goose (which is an escapee apparently) so the Barnacle may be the same one. One drops into UW now & then possibly one of the non-migrating flock at Slimbridge WWT.