Advice for winter?

[mystry]

I am new to the guinea thing. I raised chickens when I was growing up on the farm, but that's been quite a long time ago. (lol) I live in So.Dak. so the winters get cold here. I am looking for advice as to how to handle them in winter? Do I let them outside, keep them locked up, etc... Different feed for winter due to cold? (gets well below zero with wind chill here.) I currently have 5 guineas and 3 ducks, but will be getting about 10 more ducks within the next week. The original ducks/guineas are about a month old. I have had no problems so far with them being together in the brooder house that I keep them in. They are let out in the morning and by evening they are back in the brooder house by themselves with the exception of one night, but the next morning they were sitting on the fence waiting to get in to the feed so I don't think I'll have problems getting them inside when it cools off.
Ok, I think I'm wandering off somewhere here, so basically what I want is some good cold weather advice for at least guineas, I'm guessing it would somewhat apply to the ducks also.

On a side note, does anyone sell their feathers? If so how much do you get for them? I really like when things contribute to their cost of upkeep. I got the guineas in the hopes that they will cut down on some of my grasshoppers and ticks. Last year the grasshoppers were like swarms of mosquitoes, there were a whole lot and I would like to be able to go out and walk in my yard without them.

Thanks in advance!

 

[Percheron chick]

Last winter was my first for guineas. I didn't do anything different for them than I do my chickens. My winters aren't quite as extreme as yours but they handled the cold just fine. They are in an non insulated converted horse stall. I did close up the W facing windows and blocked off the front where the snow blows in but other than that nothing special. They do eat more in the winter but they all do. Mine insisted on getting out even if there was snow on the ground. Lucky for the hens because they do get cranky and noisy when they are locked up. They all return to the coop at night so that's never been a problem. Mine want their feed right before bedtime so that seems to help. If I hold back filling the feeder until it's getting close to bedtime, they are all in waiting for me. I don't have ducks but they are going to have another layer of problems in the winter. Ducks need water. How people deal with frozen swimming pools, I don't know. You could probably get by with a shallow goat watering tank and put a tank heater in it but they will still have water and mud everywhere in the coop. Perhaps set it up in a sand box or a box of rocks so the water can mostly drain.

You will see a nice drop in grasshoppers and ticks this year but where you will really see it will be next year. You can actually plan for a garden next year!