Day 19.067: Ring...billed?

I took my camera when I went back to work after lunch yesterday and stopped to look at the small pond near my work which had - for the first time in a while - some ice-free water and as a result some ducks.

Most interesting was this one:

Immediately recognizable - thanks to the ring around its bill as a ring-necked duck. They do actually have a subtle ring around their neck when they straighten it out, but I've never observed it.

First sighting of this species for me this year.

Today, the pond is ice-covered again after a chilly night and all the ducks have gone somewhere else.