My RIR died yesterday evening. She looked healthy comb was red and normal looking. She went into coop Wednesday evening earlier than normal then Thursday when I got home I let them out and noticed she ran up to me but looked like she was gasping for air. She died about 5 minutes later. I have 2 other hens now and I am not sure what happened. We give them snacks of dried worms and rice with cayenne pepper to purge any intestinal worms. Possible she had respiratory problem? Any advice? I gave them some vet rx this evening hopefully to save the others.