I knew better but I did it anyway. My yard is flooded and I have no where for my older hens to go outside so I sold all but one Australorp, she's 1. I put her in with 3 8 week old hens. This is where I should have resisted the urge to be lazy. She really paid little attention to them unless they got in her way of food and then she gave them just a little reminder she's the biggest. This is the 4th day I left them alone all night. There were black feathers all over this morning when I went in and the little ones are blondes. I found one laying on her side when I investigated. She let me pick her up and check her over. I didn't find any bloody areas or missing feathers and she ate a little but then over and laid down again. I've moved out the Australorp until they are her size but is there anything I can do to save the younger hen?