Cold Wet Frizzle - What to do?

[loofa]

I have a little banty frizzle rooster who I rescued a couple of months ago from a bad situation. He is going into his first winter and the poor thing is just not made for Pacific Northwest rain. Despite a covered porch he could retreat to he has been huddling under a tree that is not keeping him dry and I'm worried that he will get sick. What do you all do for your frizzles??? How do you keep them dry and warm? My only other fowl right now are ducks who rejoice in all the wet.

 

[loofa]

I want to add that searching for sweaters, jackets for bantam chickens, almost everything I find is full sized hen saddles. The few sweaters just look like something that will get water soaked, and almost nothing is for little banties. If anyone has links to products, I'm sorry, I don't knit or sew, it would be so appreciated.