Quote:
<shrug>
What's "need". It is very very very subjective.
To stay alive, 1 sq ft indoors plus 10 sq ft outdoors may be fine -- providing the particular chickens in question are reasonably outdoorsy and/or the outdoor space is sufficiently protected for them to choose to use it during unpleasant weather. And hey, even if they're not using their outdoor space at all, it's still a tad better than most battery hens get. So, whatever, sure, if that's how you want to keep chickens.
Personally I've never kept them at less than 4 sq ft indoors *plus* ample run and at everything up to 15-20 sq ft indoors plus ample run (and lest you think it's because I'm in Canada, my experience with the more-crowded stocking rates was in *summertime* not winter)...
...and seeing how differently the hens act at 15 sq ft indoors (plus ample run), I would NEVER be keeping them at even just 4 sq ft apiece plus run, let alone 1 sq ft plus 10 sq ft in the run, unless I was for some reason keeping them for solely-nutritional reasons and had no possible means of giving them more space or keeping fewer chickens.
But everyone has different ideas of how it is reasonable or fair to keep animals, or what their goals are.
So, I think my answer remains: <shrug>
I can't control what other people do, I can just give my own chickens the best conditions I reasonably can (i.e. keep fewer chickens)
JMHO,
Pat