????new to ducks question????

I don't have ducks but your black one sound like a Black Swedish. http://www.feathersite.com/Poultry/Ducks/Swedes/BRKSwedes.html

 

Look for 2gal heated water buckets, or use a bigger one with a board over top to prevent swimming. Full baths are a special occasion in winter here at my farm.

 

Yep, bathing not needed, but they do need deep enough water to dunk their nose and eyes.

I use a flexible black plastic/rubber horse feeding pan. Maybe 6 or 8 inches deep and 1.5 feet across. I use a stock tank de-icer, one that can touch plastic, to keep it thawed.

The ducks and chickens can be kept together.

I know one lady who set up a two foot tall shelter on the side of her coop. It is two, or two and a half feet deep. Even though her ducks could go into the chicken coop, they prefer to stay in the box/shelter thing. They really don't need as much shelter and warmth as the chickens.

 

If you do want them to be able to bathe, a bird bath heater works great in a small kiddie pool. Be aware that it will create ice around the perimeter from splashing and dumping, but my personal opinion is that it is worth it to allow them to bathe over the winter. I used heated dog bowls with a rock in them in their shed for drinking/face washing.
I add some cracked corn to their feed during the coldest months. They should have a place that is secure from dusk to dawn, safe from predators, and a place to get out of the elements if they choose. I bed my shed deeply in the winter so they can snuggle in if they feel the need to.
They are pretty hardy, but still need a bit of extra attention when the temperature takes a nose dive.
Good luck.