on my walk home from work yesterday i went thru mirror pond and it was cold, foggy and near dusk. lots of birds were in the icy water just floating about and I couldn't wrap my mind around it. I know ducks and geese are adapted to that but geez, if I got into the water with them I'd die of hypothermia.
then I saw a big bunch of Canadian geese and some other much smaller black and white ducks foraging in a large group. it was so cute seeing the gigantic geese as compared to the tiny ducks. I kept a respectful distance and out of the middle of the group a bunch of those tiny ducks just flew off obviously because I had walked by but the geese stayed put. it was neat.
then last night I had a dream I saw a bunch of pintail ducks like the ones you had posted, poult. Wow. Now I am dreaming in duck. Funny.
Since we've been getting snow and single digit temperatures, the birds have flocking to my backyard in droves, especially the Pine Siskins. My highest count of today was 24! They tend to congregate with the American Goldfinches (I've estimated around 50 birds). I also saw the local female Pileated Woodpecker in the front yard around the 2nd of January.