I sometimes feed in the coops or the areas that are sheltered... or wait for the rain to stop... if I know there is a big storm predicted for morning,I'll give a 3rd feeding right before lockup.. I usually feed and hour after I let them out and about 4pm... in the wild they wouldn't be eating when they are hunkered down in the rainI have thought about just feeding it on the ground. After thinking about gutters for troughs yesterday, I was looking around to think where I would place them. My covered areas aren't big enough, I don't think. Not if everyone is eating at the same time. So that leaves out in the open, rain or shine. That's not a problem with my 5 gallon bucket feeders with the pvc elbow ports. The rain only rarely makes any wet clumps in those.
Not sure what I will do on rainy days. Normally in the rain they just huddle under covered areas until the rain lets up, and then come out to eat. By then it seems like the FF would either be washed away or very soupy. Or do you just delay breakfast until after the rain? That might not work out for those of you on a set schedule.
Yes, it's nice reading all the many variations people have with their methods and flock sizes.
I should add, I have about 50 right now, I think, not counting brooders and grow out areas.