I noticed yesterday about her comb was limp, I found out through a knowledgeable person that can be normal. She was fluffed up this morning. Yesterday I watched her in the yard, was was slow, shaking her little head. I went to the feed store I got some liquid vitamins gave her some to keep her immune system up. They have a high protein diet. They used to run across the street where the neighbor puts out wild bird seed where the wild birds went, could she of contacted something from the wild birds? We have a large fenced in back yard where they cannot do that any longer. She was pecking at the ground yesterday, but not scratching. I have been trying to study to see if I can find out what could be wrong. We only have 4 chickens. The other ones seen fine. She is only around 2 years old. Any help would be greatly appreciated it. My husband is working, so it would be very hard for me to catch her and bring to the vet, And as I have been reading sometimes the vets cannot figure it out. Thank you in advance for any suggestions. Please if anyone is really knowledgeable about chickens I will give my phone number, I love animals I do not want to loose her so young.