Silkies dying

[TheChickenHill]

I keep finding my silkies dead nothing is getting them I have bought stuff to put in their water to boost their immune system what should I do

 

[ChickensAreSweet]

Are they too cold, do they have signs of a respiratory ailment, diarrhea, or other problems?

Anything else you have noticed?

 

[sourland]

Are you feeding a good and complete poultry diet? Have you ruled out coccidiosis , worm, or mite/louse infestation? Are there any signs of respiratory problems?

 

[ChcknGrl]

How old are they?

 

[TheChickenHill]

They shouldn't be cold I live in south alabama so it don't get real cold plus I keep a light in them at night if they do get cold I have never had any chickens just die all of a sudden like this I have had 6 die in a week I have fleas reAl bad in my yard could that kill them I have put out 7 dust for that and they are still there I am clueless

 

[TheChickenHill]

How would I tell if they have respiratory problems?