Breed : Dark Brahma Age: 1 year Status: Laying bird General condition: excellent Feed: Whole grains ( 10 types), Fish meal and feed pre Mix, Vegetables yesterday she was ok perky active jumping and playing but today i noticed her standing in one corner with eyes closed. When i checked her i found this You can see the cheesy matter in the vent. I gently washed it with antiseptic first and removanceed this yellow mass with cotton bud. The smell was very bad and rotten. When i removed the yellow substance i saw blood underneath but coming from inside the vent. I gave her Amoxil 250 mg. after few minutes she poopes pic attached She is eating and drinking now but seems to be in pain. Its the first time ever that i am seeing this problem. Please advise.