I have raised chickens the best part of my 75 years. Have something I have not encountered until recently. My chicken house is clean, I throw dust on around, no mites, plenty of fresh clean water, feed 28% grower and 16% laying pellets. Rhode Island Red hens I purchased from a hatchery (hatched 4/1/22 do not lay, at all. I have feeders full, check every day. I have lost a lot of pullets, find them weak or already dead, pick them up, and have less than a pound in my hand. Breast bone has nothing on either side, (no meat), just a sharp breast bone, no weight at all. The ones the were weak I took out, put down food and a little water with honey, they took it, yet died. No roosters have died, today I had a what was a full grown hen down, like picking a feathers on skin? Any thoughts would be appreciated.