Several clues are mentioned here...let's try to pull them apart.
1. 4 different species of poultry: Peafowl, Turkeys, Guineas, and Chickens
2. Illness presents: Thin, emaciated, weak birds
3. Death at 2-4 weeks after onset of mystery illness
4. New environment, with suspicious burn pile
5. Inflammation under living Turkey's wings
6. Chickens and Guineas seem unaffected
Point #1, there are some conditions that affect chickens but are not lethal to them. However, can infect and be lethal to Turkeys at a young age. Blackhead (caused by a parasite) is the most prevelant cause of death for young turkeys reared with chickens, guineas and pheasant. Not sure about peafowl.
Blackhead signs of infection begin to appear seven to 14 days after exposure. In turkeys, the yellow-colored fecal matter is the definitive symptom of Blackhead disease. Other symptoms: Lthargy, Drooping wings, Dry, ruffled feathers, Suppressed appetite, and increased thirst. Death usually occurs in one to three days.
Point# 2, seems to fit blackhead.
Point#3, seems to fit exposure to blackhead.
Point#4, it is probable that the parasite ova were in the soil of the new environment, since the turkeys and peafowl have were unaffected previous to the move. The suspicious burn pile, who knows what was burned? You cleaned it up, so, no issue with that.
Point#5, No thoughts at the moment. Except maybe mite irritation.
Point #6, Chickens are usually able to stop the disease before destruction of the ceca and degradation of the liver take place. Infections in chickens often are undiagnosed, though in chickens the impact of Blackhead has been described as being at least as severe as coccidiosis, and in some broiler breeder flocks, mortality may reach as high as 10% (
McDougald, 2005). Bobwhite quail farmers have also occasionally experienced outbreaks of Blackhead disease, especially when these growers utilize old chicken houses. (
attra.ncat.org), (Parasite Management for Natural and Organic Poultry: Blackhead in Turkeys), (Terrell Spencer NCAT Agriculture Specialist)
What to do?
There are no conventional treatments after infection has started. However, I did read a post about a someone who used an old natural remedy that was successful.
CAYENNE PEPPER was used to treat a turkey infected with black head, and the turkey survived! In fact all the poultry were given cayenne pepper in the feed with no ill affects.
The article was right here on BYC:
Hope This Saves A Turkey From Blackhead
Discussion in 'Turkeys' started by melanie, Feb 17, 2009.
www.backyardchickens.com/threads/hope-this-saves-a-turkey-from-blackhead.134230/
Well, these are my thoughts, I hope they are of some use to you.
God Bless you and your birds too!