Chickens dying of unknown disease

Aldebaraan

Hatching
Mar 23, 2025
2
2
6
In the last two weeks, 4 of my chicken have died to a unknown disease.

1. They are well fed
2. They live in a fenced area about 10x30m
3. The first one that died was a less than 2 year brahma. She was coughing/sneezing more than usual (she always have been sickly) in the day before she died.
4. After a few days, another brahma (this time a over 5 year old hen) died after noon. My mother found her dead inside the coop. My dad have been there in the morning and didn't notice anything unusual.
5. Another few days in, a 2 year old australorp (sister of the first brahma) also died. She was one the most active members of the flock and very healthy.
6. Few days more days in, a over 5 year old australorp died. She was the leader in the pecking order.
7. In the photos i posted (taken today), this wyandotte is showing signs of the illness. She's just stays there, head tilted, probably in pain.
8. The brahma in the photo is also like this.
9. The two guinea fowls i have do not show any signs of the disease.
10. I noticed that the white leghorn in the photo was having trouble breathing when i went to check some trunks for earthworms for her to eat.
11. I think the roosters (there's two, the new hampshire in the photo and a brahma hybrid) are also sick.
12. The hens have no feathers in their back due to overbreeding (i had 10+ hens before this incident).



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Last edited:
coughing, sneezing and troubling breathing point to a respiratory infection. Sudden death points to a serious one. Is there avian flu in your area?
Not that i known of. This is the first time we had this issue since we started creating chickens 3 years ago.

The Wyandotte hen in the photo died today.
 

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