Pigeon Guillemot / Guillemot colombin / Cepphus columba: Since you cannot see this bird’s eye, I would normally not include this shot on my blog. I’ve made an exception in this case, because it clearly shows one of the best field marks that differentiate this species from its close relative the Black Guillemot, namely the black “wedge” found in the white “window” on its wing. When the wings are folded, this mark may be hard to see, but when they spread their wings this way, it is quite evident.
Photo taken on March 5, 2015, from Burrard Dry Dock Pier in the City of North Vancouver, BC, Canada, with a handheld Nikon D5200 and AF-S Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED (ISO 560, 300mm, f/5.6, 1/1000). Not baited, called in or set up.