I’m sorry I don’t have advice but am also having this same issue in my flock. I have three older hens and three chickens under a year. One of the three younger ones (red star) is plucking and eating the vent feathers of the other two. I thought it was a lack of protein so I increased but the...
I got three day-old chicks on April 28, which makes them 7 months old today, and none of them have began laying - a Red Star Sexlink, double-laced Barnevelder, and a Welsummer, all which should normally begin laying around 16-20 weeks. I also have three older hens (16 months old), one stopped...