Sorry I didn't see your post about duck eggs. I have ducks and drakes and eggs ;-) I would be happy to get you some eggs. I have never tried to hatch them, I don't know if the drakes are doing their job, though they try, and try and try LOL
Ducks and chickens really like different environments. My ducks don't like to be dry and my chickens don't like to be wet. It does pose some problems when housing them together. The humidity associated with ducks is very high, this can cause some concern (especially in the winter)
Drakes try to make whoopie with chickens sometimes (I hear) and it can kill the chicken.
Chickens like to perch on the highest comfortable spot, & tend to poop on the ducks.
Just a few concerns to think about if your housing them together. Mine don't even share the same part of the yard. It's the North VS. the South around here, & the dogs have lost their playground LOL
Differences between Ducks & Chickens:
I have discovered ducks act much like MY children; Whereas Chickens act much like Facebook children (you know, the perfect ones that don't really exist)
Ducks demand to be fed, entertained, watered, given treats, they love getting everything as wet and muddy as possible. They demand to be let out in the morning and refuse to go to bed at night without much bribery and cajoling.
Chickens. happily greet me in the morning and seem surprised that I have brought them food. They gather around my feet and let me pet them, they peck gently at my fingers. Eventually, they wander out into the yard for a full day of foraging. When I go into their yard during the day to work or check on them they come out to greet me, chirp happily then go about their business, and are again surprised to see me bring them food in the evening. I go out at sunset to find them all in their pen awaiting the closing of the gate and coming of evening. They chirp a soft "good night"
So yep, I can see why people have chickens now. I still love my messy demanding adorable ducks...but yeah......I get it now.