Off Fanad, County Donegal, a Northern Eider of the race dresseri was found today - images at http://www.irishbirding.com/birds/we...180/Eider.html. This would be the first of this form for the WP - breeds from Maine round to Baffin Island, I think.
Though the images are poor, the very swollen and rounded frontal lobes of the bill are perhaps just about visible.
Compare with this from New Brunswick - dresseri - http://www.pbase.com/guenette/image/43696895
One from Quebec (race?)- http://www.pbase.com/image/80689381
And these from Massachusetts (race unknown, but prob. borealis) - http://www.pbase.com/gtepke/image/21969775