I have a small flock of 6 layers. 3 are 21 months and 3 are 8 months. Only 2 of the 8 month birds are laying now. All 3 new birds used to lay in early fall but one of my 21 month hens (Raquel) started going after the new layers pretty aggressively. I didn't separate her and now one of the 8 month old hens (Niagara) is acting very timid, her comb looks dry & pale (like a full-molt hen). Last September, I didn't think too much of the aggression (which never got too bad) until one day Raquel rooster-jumped the timid Niagara. The Niagara stopped laying after that & really separated herself from the flock (she is a barred rock & the biggest, softest hen I have-good energy, appetite, etc). Raquel, the aggressor, is starting to molt. Hope that takes the wind out of her sails. Raquel also continually challenged the previous top hen (FiFi) for her preferred night-roosting site. Raquel's a good layer, but she's gotten more pushy as she gets older. How can I change this? CAN I change this situation? As the pecking order has been set, I don't see any more aggressive behavior. Should I add another nesting box for the hens? I used to have 3 but they preferred to make their own nest so I took out the boxes. I can put them back or make more & put them in. Something, anything! Help!