From my research, I'm pretty sure this is a juvenile double-crested cormorant. This shot was taken from Armeni Park which is on Elliott Bay in West Seattle. Thanks for your views and comments :).
@congaree Are you familiar with Harbor Avenue in West Seattle? Armeni Park is located between Harbor Avenue and Elliott Bay which is directly across from downtown Seattle. That's where this shot was taken. I was looking south in order to get the hillside's trees in the background.