People have asked me where do the loons go in winter. From what is understood they will follow rivers out to open water in harbors along the coast. I spotted this pair today at the mouth of the Merrimack in Salisbury, MA. As you can see, their winter plumage is dull, similar to a juvenal's, and quite different from the black & white plumage we are used to seeing... January 8, 2018.
Common Loon Gavia immerMerrimack RiverSalisburyWinterbirdsdaily photoducks
From Daily Photo 2018