As a general rule, ducks and chickens should not be raised in the same space. It is hazardous to the chickens for reasons identified above. If/as required, I can be considerably more graphic for your parental-units in describing why keeping ducks and chickens in the same space is a very bad idea.
Which isn't to say it can't be done. See my signature, below, for my current flock (I've culled a few birds for my table in the last few days, thus the smaller size). I'm doing it.
HOWEVER, my birds have roughly five acres to roam, and of my dozen ducks, I have one adult drake, one juvenile drake, and ten hens. I've managed with two adult drakes and eight hens, all of whom grew up together, but relationships were "testy". There's always going to be some individual variations, but in my limited experience 5-6 hens per drake is probably close to a practical minimum ratio from a behavioral standpoint.
In addition to the dangers of potential cross-species matings (which is a horror movie involving a corkscrew!), ducks and chickens can pass a number of diseases and parasites back and forth between them, and as you've already no doubt noticed, ducks are messy, messy eaters and tend to leave things "wet". Chickens really prefer dry, or at least no more than moist, certainly not damp.
As the other experienced posters above suggested, I would cull. Or Rehome. Most likely cull for the table. You don't need a male to get duck eggs, and you don't have the scale to be raising ducks for your own table. Ducks aren't particularly frequent layers, though the eggs are pretty special - with the typical size constraints most operate under, I'd focus on either chickens or ducks - not both.
Which isn't to say it can't be done. See my signature, below, for my current flock (I've culled a few birds for my table in the last few days, thus the smaller size). I'm doing it.
HOWEVER, my birds have roughly five acres to roam, and of my dozen ducks, I have one adult drake, one juvenile drake, and ten hens. I've managed with two adult drakes and eight hens, all of whom grew up together, but relationships were "testy". There's always going to be some individual variations, but in my limited experience 5-6 hens per drake is probably close to a practical minimum ratio from a behavioral standpoint.
In addition to the dangers of potential cross-species matings (which is a horror movie involving a corkscrew!), ducks and chickens can pass a number of diseases and parasites back and forth between them, and as you've already no doubt noticed, ducks are messy, messy eaters and tend to leave things "wet". Chickens really prefer dry, or at least no more than moist, certainly not damp.
As the other experienced posters above suggested, I would cull. Or Rehome. Most likely cull for the table. You don't need a male to get duck eggs, and you don't have the scale to be raising ducks for your own table. Ducks aren't particularly frequent layers, though the eggs are pretty special - with the typical size constraints most operate under, I'd focus on either chickens or ducks - not both.
