A rather pale (presumably a northern argentatus type) bird in the snow of Peterhead (19 December). The primaries have clear pale fringes and are distinctly brown, rather than black. I guess these features may be interpreted as suggesting some Glaucous influence, but birds like this are part of a continuum from dark to pale Herrings and confidently drawing a dividing line (at least for me) is difficult. Notably, this bird seems to have renewed one inner greater covert.
A few more typical argenteus type birds are shown here.
I came down to my home town of Sunderland on 21 December. The perfect combination of bright sunshine, snow and a partially frozen lake encouraged me to play around taking some duck pictures.
The same Mallard
Male Tufted Duck
... and another Tufted Duck.