Some chickens just enjoy the rain. I raise silkies. It's raining right now and they're all out in it.
We have a lot of cover here, but they don't use it.
If it's going to be a really bad day with lots of wind and rain, storms, or in the winter with blizzards, I don't let them out in the yard. We have a covered pen off the coop we can let them go into but that's as far as I let them go in really bad conditions.
Here's a few of mine a couple of years ago. They get so dirty, but somehow they manage to look all beautiful the next day.
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