I have a pair of Cayugas. I bought 2 straight run ducklings, with my fingers crossed. I would have preferred two ducks, but a pair (duck and drake) is okay, as long as he doesn't get too .....ummmm...... macho..... and try to mate any of my chicken hens. (They're in the same run.)
Thelma loves to swim. I have a 300 gallon stock tank and she dives to the bottom and swims around under water like a speed demon. She will float lazily on the surface of that pool for HOURS. Louie, on the other hand, likes the pool, but only stays in it for about 45 minutes at a time, maybe twice a day. But he stays right next to it, faithfully, as long as Thelma is swimming. They are definitely a pair; he is very devoted to her.
The first time they got out of it, my heart went into my throat. I don't want them getting hurt!
So I cobbled up a ramp so they could get in and out of that tank.
I had a kiddie pool for them first.
They aren't very old, but I've seen some signs of sexual interest. Thelma will stretch out her neck parallel to the water, then sit up and they'll bob heads at each other. Then she stretches out her neck again, and Louie will cross her neck with his. They haven't started mating, but that is courting behavior.
She's quite loud WHEN she quacks, but it's not very often or for very long at all. Maybe 3, 4 quacks at a time, usually when she is startled (bumped by a chicken, perhaps), or when everybody is dashing to greet me at the run gate. He NEVER quacks, only a soft husky sound very rarely. They do gabble quietly with each other.