With time to look at these ducks today (31 Dec) I've come to the conclusion they are hybrid American Wigeon X Mallard. Male on the left, female on the right - probably siblings.
The hybrid next to a normal American Wigeon. Note the differences on bill colour and plumage but the overall similarlity in jizz.
A blurry flight shot (one handed from a moving car!) has plenty of useful information, especially showing the blue speculum like a Mallard or Black Duck.
Other highlights expected on a winter trip to the western side of Conception Bay were the male Barrow's Goldeneye at Spaniard's Bay and the Buffleheads at Chapell's Cove.
The long time male Barrow's Goldeneye was present at Spaniard's Bay but far from shore. This is a 100% crop from a 500mm lens. The male hybrid Barrow's x Common Goldeneye was also present for how many years is it now... 10 years???
The ponds at Chapel Cove in the bottom of Conception Bay have only recently been discovered as a as thee Avalon Peninsula Bufflehead hotspot. This morning there were 11 present on the ponds but by early afternoon only two were persent. There is plenty we don't know about the operations of these birds.