Sorry, but I can't remember where the post about battery hens was.
Found this, by accident, and thouht it might be useful to someone, if only for design purposes.

http://www.feelgooduk.net/6-chicken...n-homes?gclid=CMuD_P_RgbQCFUfJtAodZSwA1Q

This thread Granny ????

https://www.wikiwirral.co.uk/forums..._anyone_help_out_rehomin.html#Post746567