I see you are in Germany. So your options may not be the same as those we have here in the states. From her pic, it looks like she has scaly leg mites. Oil her feet and legs once/week for a few weeks. Do the same for the rest of the flock. I'd also oil her dry skin around her face, be sure not to get it near her nose, eyes. don't know if they can affect the face, but you need to put her on a higher protein, She, as well as the rest of your flock are not getting the correct nutrients. Since she is the runt, it shows in her first. But all birds are likely malnourished. High protein, separate her for special feeding. Give her animal protein, even a hand full of kitty kibble.
DE will not remove a mite infestation. For that, you need to clean out the coop and treat the coop, as well as treat the birds on a weekly basis x 2 - 3 repetitions. You should completely destroy all old bedding or remove it from your property.
DE will not remove a mite infestation. For that, you need to clean out the coop and treat the coop, as well as treat the birds on a weekly basis x 2 - 3 repetitions. You should completely destroy all old bedding or remove it from your property.
Should I then switch to a high protein diet? More eggs, meats, broccoli, and cooked beans?
16-18% protein? I just checked and their current food has 9.2% raw protein. Also as an opinion question, my chicken is very small and if I try to feed her something special the other chickens will push her out of the way without letting her have anything. I should probably separate her from the rest of the chickens entirely before a special meal like tuna right?