19 week old Cockerel sudden death

ella2025

Songster
Apr 24, 2025
241
309
116
Massachusetts
I just found Carlos, my 19 week old silkie rooster lying dead in the middle of the chicken run. I was in the chicken coop hanging out with the chickens just hours before, at around 3. He was ALWAYS healthy and active, with no signs of any of the common chicken Illnesses, even hours before his death. I checked all around his body for any wounds. Our run is super secure and there's nothing externally that could justify his death. Sadly we don't have a camera in the coop.Here are some possible causes that I think might be it.

1. New rooster. We brought in a new Ameraucana rooster about the same age as him. Unfortunately due to me not being super educated, I didn't quarantine him and I didn't really take all that much effort to introduce them. He and my other silkie rooster fight sometimes, but nothing too crazy, and Carlos is usually pretty chill with the new rooster and doesn't try to fight him. He doesn't have any wounds which I believe means it's probably not caused by a fight.

2. Lice? I found a few little white bugs on a few of my young pullets around the time the new rooster came 🫢. Yeah not quaranteening was a super bad idea and I was stupid. I treated them with the only medicine I had which was Poultry Protector and DE in the run. I've checked most of my chickens at least 10 times for the lice, but only the chicks had them, and only on some days can I see them on the chicks. I treated the chicks multiple times. Carlos never showed any signs of having them, and every time I checked him I never saw any despite him having black fur. On his dead body I actually saw a few lice. I strongly believe its not the lice that killed him either because he has never showed signs of having them, and there are VERY few on him, 2 that I could see, and never have I seen them when he was alive.

3. Heat stress. We've had a few upper 80s and up to 90s, sunny days. They have shade in their run and they stay there in the shade between about 11 am to 5 pm. They have fresh water constantly available and I see all the chickens drink a lot. I will create more shade and do more for the rest of the flock against heat stress, it seems like this is a strong candidate.

What do you guys think? The last 2 photos were taken when I was with him a few hours ago. He looked the same as he always did, no new signs of illness. Will I have to cut him open to see any internal injuries?

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I’m not a Silkie expert so I will defer to others on this but I know they can be fragile in ways other chickens are not. I have had chickens die for no apparent reason though and it sucks but short of a necropsy you might never know. And we’ve all made mistakes. I’ve made mistakes knowingly because it’s what I had to work with. Don’t beat yourself up about it because unless your other chickens are showing signs of illness I very much doubt it was anything contagious.
 
I’m not a Silkie expert so I will defer to others on this but I know they can be fragile in ways other chickens are not. I have had chickens die for no apparent reason though and it sucks but short of a necropsy you might never know. And we’ve all made mistakes. I’ve made mistakes knowingly because it’s what I had to work with. Don’t beat yourself up about it because unless your other chickens are showing signs of illness I very much doubt it was anything contagious.
Thank you. I'll keep an eye out on the rest of the flock. All this is so strange. How can I do or send him to do a necropsy and do you know how it works? I'm willing to do it if it's not too expensive.
 
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Sorry for your loss. It would be hard to know what killed Carlos. He might have been kept from food or water by the other roosters, or injured by one of them. He could have caught an illness as well. Wrap his body in 2 clean plastic bags, and either refrigerate it or place it in a cooler on ice, but do not freeze it. Most state vet labs are open M-F, but call them or email to find out how to get a necropsy. Cost varies from state to state, and if you can deliver the body in person it would be less cost. They also can email a prepaid shipping label to ship it overnight. Sorry for your loss. Here is a list of state vets to contact:
https://www.metzerfarms.com/poultry...L5h4Xt137GBu32pWJZSRUY5DYhQyVrd4ODmF-Ab8otocc
 
The stretched out body position looks like an almost instant death from accident, injury or pre-existing condition. If he'd been sick or had been kept from food and water, he'd have shown symptoms. When a sick chicken dies, they tend to sit with their legs tucked under and head lowered.
 
Sorry for your loss. It would be hard to know what killed Carlos. He might have been kept from food or water by the other roosters, or injured by one of them. He could have caught an illness as well. Wrap his body in 2 clean plastic bags, and either refrigerate it or place it in a cooler on ice, but do not freeze it. Most state vet labs are open M-F, but call them or email to find out how to get a necropsy. Cost varies from state to state, and if you can deliver the body in person it would be less cost. They also can email a prepaid shipping label to ship it overnight. Sorry for your loss. Here is a list of state vets to contact:
https://www.metzerfarms.com/poultry...L5h4Xt137GBu32pWJZSRUY5DYhQyVrd4ODmF-Ab8otocc
Thank you! I'll check this out.
 
The stretched out body position looks like an almost instant death from accident, injury or pre-existing condition. If he'd been sick or had been kept from food and water, he'd have shown symptoms. When a sick chicken dies, they tend to sit with their legs tucked under and head lowered.
That's really good to know. I figured he died suddenly, he went from healthy and active to stiff and death in a few hours.
 

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