I set 13 eggs under my broody hen 29 days ago, but what with the heat ect I'm not sure what to expect??? How much longer should I let her sit on these before I replace them with different eggs? Do you think she will stay broody for another 28 days??? She is a generic barred rock bird, she successfully hatched a batch of chicks for me last summer no problems. When I check my eggs for eating ect, they all have the target bullseye on them so I am *assuming* that they are fertile. Oh, and it took me about a week to accumulate the eggs that she is sitting on and they stayed cool in the house but not refrigerated. Any help that you all can give me is much appreciated.