The bufflehead is a widespread breeding bird in Canada and there are a few small colonies in north-west USA.
It took me a long while to find this bird and with some collective help from another birder on site and good mate Adam Archer (via a swift phone call) I soon found the birds location.
The bird was on B2 lake this lake is situated further north than the lake that the hide looks over. its attached to this lake by a small inlet and best viewed along the public right of way that runs adjacent to the railway line. When I saw the bird is was at some distance and the bird was constantly feeding, hence these really poor images. Still, it's a bufflehead, it's a new tick and it was stopped safely.