My top hen is being a right pest to the other birds these days, honestly behaving worse than a two year old kid going through tantrum phase. She pull feathers out of the top of their wings and from the front of their necks and the wee ones are so timid they just stand there and take it. Its not boredom or a deficiency, she does it out of plain badness and jealousy. I've watched her at work....one chick is in her favourite dust bath so over she goes, and pecks and pulls until the poor bird gets up and lets her take it's place, if one stands in front of her in the food queue, peck, if one is spending too long looking to me for attention , peck peck. It's starting to cause real feather loss patches on my other birds where she keeps picking on them, one girl even hides behind my legs whenever the top hen is about and I'm in the garden with them. I've tried vaseline, I've tried anti-pek spray and I've upped the calcium and vit D supplements although being top hen she gets the best choice of the food anyway. It's doing my head in, I'm sure she just does it out of plain naughtiness. How do I stop her?