Injured chicken still panting 5 days after attack, can't breath?? Won't eat either
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Photos may be helpful of her and the wound.
What type of attack was it?
How old is she?
Have you separated her and if so does she have warmth, but also a way to get cool?
If it was an animal attack like from a dog/cat she could have internal injuries (crushing injury) which may be causing the breathing problem.
Offer her wet mash since she is not eating, wet her chick feed and make it into a paste, you can also try hard boiled egg or tuna.