I'd say we'll probably go with organic. DH is a homebrewer too, and I've read a lot about 'spent' grain (grain that's been used to make beer), it's apparently a fab chicken food. I'm not sure it could be their primary source, but definitely fab as a treat.
DH reminded me today that his cousin is an organic chicken farmer, so he's contacting him this weekend to get some recommendations of where to get birds etc
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