Once they'd settled I set up my scope (staying in the car of course - to get out of the car in situations like this would just scare off the whole flock) I scanned through, quickly picking out a young Tundra Bean Goose.
Tundra Bean Goose, Burnham Market, 12th January
I spent about half an hour scanning through the flock seeing nothing else, but towards the end of the time I noticed a few geese arriving from neighbouring fields - perhaps the birds I'd flushed away at the beginning? Then there it was, looking so obvious I can't believe it was there the whole time. At the back of the field but in full view and very easy to pick out due to its dark plumage and orange bare parts, the first-winter Greenland White-fronted Goose.
Greenland White-fronted Goose, Burnham Market, 12th January