This male Hooded Merganser duck (Lophodytes cucullatus) flew away when his mate entered the nesting box (as shown in my posting yesterday), but I was able to get these shots when he was swimming around beforehand.
I am also including a shot from earlier this month when a male was displaying for a female. He would periodically throw back his head back and make the strangest sound, almost like a frog. The sound is so unusual that you may enjoy checking it out at the Cornell Lab of Ornithology site, where you should click on the button that says “Male display.”
Michael Q. Powell. All rights reserved
Mike Powell 
Thanks for including the link to Cornell – that is an odd sound. Our ducks know it’s spring, and they are pairing up for the season, and are very talkative these days.
Really amazing photos, I use the Cornell site so that was a great touch, thank you.
That is a very strange sound for a bird to make, but this isn’t any old run of the mill bird either.
Such a handsome guy! Their mating display is interesting, but gives me a neck to watch.