Here is a Pigeon Guillemot with a sculpin in British Columbia which probably makes it Cepphus columba adianta which has on average a slightly smaller culmen (34 mm) than the guillemots of Oregon (35+ mm). Such a tiny difference is meaningless however in making field estimates of a couple cm. This sculpin is facing away from the viewer and is probably 6-7 cm long. Note the large pectoral fins and how the tail hangs down from the head. Sculpin held in this position (bill grabbing the sides) can appear floppy in the back end, whereas a dorsal-ventral hold they are a little stiffer bodied.
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