Thanks Jan Anne, Paco and Bent. This was taken at park below the Locks that transfer shipping to Seattle's inland lakes. An excellent place for birds, though Dec-Feb are usually a bit sparse and the light often dim. I stopped by to see if the herons who nest there have begun to show up and contest for nests. Not yet, but surely soon. The crows were after mussels exposed by a very low tide. At some point the merganser in the photo I'm attaching today floated past, diving for small fish. Reflection colours here (sky, trees on the far bank, passing ships, etc) are very fine on a calm day. Both this and previous photo with the D850 and 500 mm PF, wide open.
Cheers again, John