One of the black sex-link begins her broodiness a couple of days ago. She sits on the eggs and remains in the nest box for a long time. I should put her in a separate cage to break this habit. And I read some ppl suggest putting ice underneath to stunn her. Well, I will just let her be. Pretty soon the old hens will start molting. I really need to shovel out the bedding (more than 1 year now) and disinfect the coop once the weather is warm enough.