1 of my chickens just died suddenly, heard a noise and found her in one of the corners of the run struggling and flipping about and a small amount of blood coming from her mouth. her neck very limp. i got her out put her in a cat box where she struggled a few more times then died. i have check her over and no other signs of anything. she was happy earlier , lay ed an egg making her usual noises, i`m not sure if trying to fly or flap her wings she knocked herself hard against the coop or what.
any ideas would be helpfull in frying to guess what happened