Please help

[Sammydove]

I have 2 backguard chickens approx 24 weeks. Today one of them has passed away in there coup. I can not understand why. I've checked them and can not see them. No signs of predictors etc. What should I check with my other chick please. I have checked head to tail and can not see anything I'm so confused

 

[Owenp_2]

I have 2 backguard chickens approx 24 weeks. Today one of them has passed away in there coup. I can not understand why. I've checked them and can not see them. No signs of predictors etc. What should I check with my other chick please. I have checked head to tail and can not see anything I'm so confused

DO you give them fresh food and water everyday?

 

[getaclue]

What were the symptoms, before they passed?