It's supposed to get -15 tonight with wind chills and here in va it's been rough with these temps we are used to 20 maybe teens but not this cold like it hss been recently. I no ducks are cold hardy but when it gets this cold I hate seeing them fluffed up and no one wants to get up they scoot around I assume to avoid getting up. Their in a wind proof run with lots of bedding heated water buckets and good quality feed. I cut them different veggies each morning and fill with warm water like a soup but I was looking for some suggestions on things I could add to help boost them threw extremely cold days i sometimes add cat food but that appears to be way greasy. Thanks.