What kind of bird is this?

The bird on the left is the one in question. I don't know. It looks a lot like a cormorant, but the cormorants we normally see are black like the one on the right. In the bent position of the black one it's hard to tell for sure, but the black one clearly appeared smaller and the beak is narrower. There were two of the gray birds on the old railroad ties, and both were bigger than the normal-looking cormorants. The wing feathers have a pretty design in them, and in my bird book the cormorant (which looks like the black one) also had similar designs, a little lighter than the black wings. So, I don't know. There was nothing in the Birds of Oregon book that looked like the gray bird. Any ideas? I took the photo from Pier 39 in Astoria, Oregon.