I put some pullets in a temporary run and after a few months they started losing a ton of feathers. I couldnt tell the feather loss from the birds themselves but the actual feathers everywhere. I gave those birds away to put my younger pullets in there and they were fine for a few months and now its the same issue as the other. The first group of birds was mutts and the two I have in there now are 18 week old cochins. Is that normal feather loss....maybe losing their baby feathers??? If you look at the birds you would never know they were losing a ton of feathers....they're very fluffy.