I'm not sure of our chickens have worms, but I think that it's very likely. They haven't been wormed since a long time, so I think it's time anyway. Is it okay to use Valbazen (1/2 cc/ml or 1/4 cc/ml per chicken, 3 times, 10 days in between), or is this too strong? If so, what else can I use? So 1 of our chickens (4yrs old) has been sick for a while now. At first she became slow and didn't have a lot of appetite, she started to have a paler comb and now she has diarrhea and shakes her head a lot. She is breathing quite heavily (1 nosetril looks a bit closed), poor girl . I checked the chickens on lice, which most of them had!! We treated the coop thoroughly for lice and mites and also the chickens themselves. Unfortunately the sick chicken keeps shaking her head. Now another chicken is starting to show the same symptoms (slow and not wanting to eat). I should add that I also discovered pink droppings when I first moved here (about a year ago), I had no knowledge back then and the chicken owner (I take care of them) didn't think it was a big deal because they looked healthy. So I didn't do anything about it... Now I ordered some extra vitamins to give my chickens an immune boost, but I think I should order a dewormer as well. Any suggestions? Thanks a lot!