Pros: Mellow, mostly "muttering" ducks
Cons: Mine are skittish/afraid of people
Got mine second hand, the drakes look like they're a Swedish/Mallard mix (dark body, white bib, green head) and the ducks are tan/white, sometimes popping up into a runner stance. Wish they weren't so skittish (run from me, can't look them in the eye or they hide), but they're fairly quiet just a quiet muttering chatter until they squabble a little then it's "quack quack" for a minute or two, then all settles down again. At least they've made friends with one of my neighbor's chickens, who free ranges in our yard ;-) maybe they'll warm up to me, they are seeming to get the idea that I bring the water and food, so they wait until I turn towards the door to the run, and then make a beeline to the water and feed.