Great views in the bright light! It took to diving later in the afternoon, but we didn't see it surface with anything in its beak. My pictures are poor compared with those already posted.
Below is our bird list. (there was nothing on the res other than the diver and the gulls.)
Some of my easily-photographed, beautiful snow scenes now on the Calderdale-wildlife blog.
Great Northern Diver
Crows, Jackdaws, Magpies
Snipe (7 together)
Meadow Pipits (13 together)