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.