I am very worried about one of my hens who has been loosing lots of feathers on her back increasingly in the last few days. There are some scabby areas too and I feel like the loss is advancing . She is a motled Houdan. She is part of a 6 hen backyard flock. They pasture most of the day in a good size yard. They Have organic crumble, water, and oyster shells always available. She is not at the bottom of the pecking order, but somewhere in the middle. I checked all the other hens ( all are a little 1 year old and have gone thru one molting late last year) and I see some small unfeathered areas on some of the others but none with scabs or broken off feathers. Maybe that is just skin without feathers for cooling. Usually I get 3-6 eggs a day and today I got one. Another weird fact is that one hen, not her and not sure exactly which has been laying wrinkly eggs for the last 2 months. Can’t figure out why. Now other eggs are also starting to look wonky and uneven. See pics. Not sure what is related. This is soooo confusing and worrisome. Also I am going on vacation for a wk in about 4 days Please help!