I have 9 chicks/hens (got them end of April as day olds) and 3 are laying so far 2 olive ethers and one copper maran. I also have 3 3year olds 3 4 year olds and 1 9 year old. All of my birds except for one of the 3 year olds know that my 9 year old is the boss. Although she doesn’t usually peck they know she’s the favourite and I will peck for her. She’s always been a runt but with her age and eating less she’s extra tiny. She was good with the chicks she would put them in their place but would also eat with them when the other birds wouldn’t. But all the chicks knew not to peck on her. But suddenly I started hearing more of those panic clucks but I thought it was just the chicks being picked on by hens so I left it so they’d learn to stick up for themselves but I realized it’s actually my baby making those noises. It started yesterday and today when I went out to let them out the second sweetest shyest chick was chasing around my oldest bird clementine and then mounting her. I let them out late so I thought maybe they were just hungry but only a few minutes later I heard it again so I went and I caught the chick and put her between my knees and pushed her head to the ground to try and fight back for clementine. But then the chick just runs back to her once I let her go. Clementine runs off but then I noticed another one this one is laying also mounted her. And of course the chicks are faster and becoming bigger so they’re rough with her and she’s frail and tiny. How do I teach the chicks to leave her alone and why are they suddenly being like this? When our mean white hen pecks on clementine we would do the same putting her between our knees and pushing her face down until she pushes her shoulders up so they’ve known since babies not to do this. I of course don’t want to cull the chicks but I hate seeing how panicked they make clementine. I had to separate her to eat but they’ve been chasing her all day so I separated her again and she just collapsed out of exhaustion.