So Bean Goose has been split into 2 species: Taiga and Tundra Bean Goose. And they both appear to have eastern and western subspecies just to confuse matters even further. Until now I’ve just ticked them all as ‘Bean Goose’ and left it at that.
I’d assumed almost all ‘Bean’ Geese passing through Hokkaido were Taiga Bean Goose. They have longer bills. longer necks and a less rounded head than Tundra. I think.
So the top one I’m pretty sure is Taiga and I think these below may be Tundras.