Chicken is shivering and breathing violently

[Nazmus]

We found one of our chicken breathing violently and shivering about an hour ago when I went to check on it in evening. We brought it inside our home now, It is sitting and and breathing with its head directed upwards.
It was completely fine at afternoon.
Now as time is going by it seem that it is also losing strength in its leg

We don't have vet here so any advice would be very helpful

 

[Eggcessive]

What are you feeding them? How old are they? Can you check for any mold that has developed in their feed container? Could they have eaten something poison? Were they vaccinated for Mareks disease? That could be a problem, but usually 2 won’t suddenly have the symptoms at the same time. Place her near food and water, and feed her often. Moistened food would be good plus a little cooked egg. I would start vitamin E 400 IU and vitamin B complex 1/4 tablet daily, and human vitamins are good. That can help with neuro problems.

If you still have the first chicken’s body, contact your state vet for a necropsy this am. That will get you a diagnosis.

 

[Nazmus]

We had to put her down, her struggling was increasing minute by minute
It didn't look like she had anyhope.

 

[AMM10]

Another one started the same thing
I checked on it at like 11.30 last night
It was completely fine
Today I went in the morning and another one was behaving like yesterday.


Symptoms
Heavy breathing
Tail downward
Lack of balance



It's almost like its strangling


Anyone please give me some suggestions

I’m going to tag a few who might be able to help. @azygous, @Eggcessive, @Wyorp Rock…

 

[Nazmus]

 

[tripletfeb]

I'm sorry you had to put her down. Sounds like it was for the best

 

[BarnyardChaos]

So sorry! Illnesses do happen suddenly sometimes, without time for any explanation or treatment. It's good you separated her from the flock as soon as you noticed it. Watch your other birds for any symptoms.

 

[Nazmus]

So sorry! Illnesses do happen suddenly sometimes, without time for any explanation or treatment. It's good you separated her from the flock as soon as you noticed it. Watch your other birds for any symptoms.

Another one started the same thing
I checked on it at like 11.30 last night
It was completely fine
Today I went in the morning and another one was behaving like yesterday.


Symptoms
Heavy breathing with neck extended to upward
Tail downward
Lack of balance



It's almost like its strangling

Dropping is fine
Drank a lot
No nasal discharge or symptoms of cold



Anyone please give me some suggestions