Not enough information to tell you. Could be a hundred things.
Did you quarantine the new birds away from your flock for a month so at least they'll be okay?
POSTING GUIDELINES for Emergencies / Diseases and Cures.
Please help us to help you.
When you need to post in the "Emergencies / Diseases and Cures" section please make the title of your thread concise and specific. For example, to title a thread "HELP" or "URGENT" or "EMERGENCY", etc., is not helpful for us or for you. Nor is telling us "my hen is sick, what should I do?" A good example of a new thread subject: "Chicken got into the pool-barely breathing! Help!"
Off topic posts will be moved, with an explanation, to an area better suited to that post.
Give us the following information. The more you tell us, the better we will be able to help you.
1) What type of bird , age and weight.
2) What is the behavior, exactly.
3) How long has the bird been exhibiting symptoms?
4) Is there any bleeding, injury, broken bones or other sign of trauma.
5) What happened, if anything that you know of, that may have caused the situation.
6) What has the bird been eating and drinking, if at all.
7) How does the poop look? Normal? Bloody? Runny? etc.
8) What has been the treatment you have administered so far?
9 ) What is your intent as far as treatment? For example, do you want to treat completely yourself, or do you need help in stabilizing the bird til you can get to a vet?
10) If you have a picture of the wound or condition, please post it. It may help.
11) Describe the housing/bedding in use
Remember that we are not veterinarians. We help based on our own research and experiences.
We cannot monitor the board 24/7, and therefore do not guarantee we can always help, much as we would wish to.