That's one of the things I love about Ducks, they don't seem to have the same petty squabbles and in fighting that chickens do. I bought a trio a while back, and another three from a different place and just released all six at the same time into a pen, the drake immediately rounded the three other ladies into his posse, and all six scooted off to jump in the pond together, immediate social order and calmness.
Now when I go down to their pen after dark, the five ladies are in the house tucked up, and the Drake is always patrolling the door on guard until I get there to shut them in, at which point he jumps in the house, job done.
I've also got two ducks at the moment who have made a big nest, and each gathered 14 eggs in it (their own and other ducks), so there are 28 eggs together, and they are sitting on it side by side, taking it in turns to go out to feed and wash.
Fascinating creatures.
They love meal worms and get pretty tame pretty quick if you hand feed them those as a treat.