For those new and old I thought I'd make a list of some of the more common illnesses since it is a common question.... I'll add more when I can...... MG/MS - One celled organism that attaches itself to the lining of the lung tissue. Spread easily through wet body fluids , such as snot, saliva, and poo. Possible wild bird exposure can contribute. Can be a carrier state, meaning once they have it, they may always be carriers. Often seems to show up during times of stress, Controlled with antibacterial medications such as Tiamulin, Tylan, LA200, Baytril and some Sulfa drugs. Bleach products are known to help kill the organism. Symptoms: Wet, water eye/eyes (typically one) and nostrils, swollen sinus, open mouth breathing, wheezing, loss of weight, underdevelopment, failure to grow, when MS is present : limb atrophy, limping, Marek type symptoms...... MG/MS can accompany other diseases or mimic them as well, so MG tests should be done to verify diagnosis. Birds should be Quarantined and kept away from all other birds, should be handled last and all clothes/shoes disinfected before handling other birds or walking where there are other birds or those coming in contact with other birds. (Such as others property, feed stores etc....) Coryza - Spread easily through wet body fluids, such as saliva, snot and poo. Can be a carrier state, although some success has been noted by using Coryza vaccines. Symptoms: Watery, pussy eye (typically one). Yellow, thick snot from nares as illness progresses, often see nostril wipes on birds back feathers. Often has very bad smell about the face from secondary infections. Wheezing, swollen sinus full of puss, open mouth breathing, loss of weight, failure to thrive. Treatment: Tylan, LA 200, Baytril, some Sulfur products such as Sulmet. Often hard puss balls form under third eye lid, in roof of mouth and must be removed. Birds should be Quarantined and kept away from all other birds, should be handled last and all clothes/shoes disinfected before handling other birds, or walking where other bird owners my come in contact. Fowl Pox- Similar to chicken pox in people. 2 versions, Wet or Dry, Wet being the more serious. Carried by mosquitoes and can even have an outbreak in cooler weather, passed from bird to bird by bites or contact with open wounds the bite leaves. Symptoms - Raised white wart like bumps with blackened scabs, often first noticed on face, eyelids, comb, wattles but can be found anywhere on the skin. Scabs crust up and may bleed when picked at, some respiratory symptoms may show such as open mouth breathing and wheezing, watery eye and nares. With outbreak of Wet pox respiratory symptoms worsen, canker type yellow lesions form in the mouth, often blocking throat if not removed, threat of death more sever. Treatment - iodine swabbed on open scabs and on cankers in throat, use of Tylan, La200, Baytril are known to help recovery, especially for Wet pox. One bird has contracted Fowl Pox, usually will not reoccur in that bird. Fowl Pox vaccines are available and are often used in high outbreak locations.