Regarding deep bedding:
We start bedding the barns for winter in about September. We use a good soil/rock base - add straw in good layers, turned daily. Add more straw when that is soiled; turn daily - only the newest layer. There are dangers to doing this and if you are not vigilant about...
For oiling feathers - the best recipe I found is the simplest - any kind of eatable oil. I use the lightest viscosity I can, usually almond or avocado or a mix with olive oil. Sometimes I mix it, sometimes I use it straight it depends on the case. There have been times when I have heated up...
From Rainy, Windy Oregon where we only get to about 20 dc in the winter:
I deep bed the barns and coops with straw, put a 'brooder' light in one corner and leave the door to the coop open, the ducks come and go - they are able to regulate themselves pretty well. I watch for ducks that are too...