We have had about 6 long stay Tundra Bean Geese in Shetland. These have been at Ringsta, Sandwick, Lerwick, Quendale
They have joined flocks of Greylag and a few Pinkfeet.
They are smaller than Greylags and usually stay slightly separate from the Greylag flock
The colour and face pattern is easily recognisable
These geese breed in Northern Siberia