Hello there, I’m new to this so help would be much obliged. I’ve noticed the tips of my chicks wings looked kinda thin/bare and then I noticed several of the chicks would go around and peck at other’s wings. They’re under a heat lamp, kept between 91-95, their brooder box is 2ftx4ft, they’ve got a feeder and waterer spread apart and water kept in the cooler area. They’re inside the house so there’s lights but I’ve been dimming them as it gets later in the day. Idk how many of each I have but it’s barred rocks and black Australorps. Any remedy to this situation would be much obliged!!