We had a lovely hen that didn't start re-laying this spring when her friends did. We noticed icky poop covering her backside and realized she was egg bound. Did the baths, mineral oil, calcium, ect. She couldn't lay the egg. Upon further inspection- encircling her entire vent was black- like the skin had dies, or gotten cancer or? We couldn't pull it off- as it was growing on her. It had enclosed her vent enough that she would never be able to lay- even if we had gotten that egg out of her. Has anyone else heard of this?
can chickens get cancer/tumours?
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Welcome to BYC. It sounds like she could have had a huge abnormal egg that could have blocked her vent opening where droppings could not get through. The vent could have become necrotic and the tissue became gangrenous and killed her. Cancer also could have been the cause of death. There are many rare but odd things that happen with chickens. That is why this forum has become important to share these findings and educate each other. You might want to read these links about salpingitis, or inflammation of the oviduct, and pus eggs:
Edited by Eggcessive - 2/23/16 at 8:35am