Hi, guys! I'm new to this site and chickenery. We have 16 5.5 week old pullets (Easter Eggers and Buff Orpingtons) that we received from Cackle Hatchery as baby chicks. My sister in law that is a vet tech sees quite a few chickens said that our ladies are really skinny, and you can feel their breastbones. The thing is we can feel all their breastbones, and I'm so confused as to why they would be skinny. They have food available to them all day (we were feeding an organic brand from tractor supply bc I was waiting on the organic brand from new country organics), and they get treats almost every day which included crickets, broccoli, carrots, grapes, tomatoes, spinach, etc. I put organic apple cider vinegar in their water since day one. Their poops seem ok based on a few websites I saw. Some can be runny, so I was concerned. The websites said that's ok. They are darker in color, but I know you can't believe everything so I thought I would check with you guys to see where I'm going wrong. They don't act like they are sick. They all look plump and bright. They stay in a brooder in our house in a room that is under construction. So, I don't know what it going on! I attached a photo so you can see the size of our brooder.