Yesterday my 14-wk old cockerel suddenly seemed a little listless and unkempt, but still moving, drinking well and eating a little scratch. He was walking around the pen and scratching some at the leaves, but not as enthusiastic as usual. He let me catch him pretty easily (not normal), and I felt lumps in his neck. They didn't seem painful. At the time I wasn't really paying attention to what they felt like. Also (I didn't notice this until later) he had swollen ears and the skin on his face looked a little yellower than normal. I researched here & elsewhere for awhile, decided it was probably impacted crop, or at least getting there. We started using alfalfa hay for litter about 3 weeks ago (store was out of shavings). So I tried giving him some olive oil followed by baking soda/water solution (found recipe somewhere on here) and tried to massage it. I noticed the lumps were quite hard (though not like a rock) but decided it could be a firm wad of alfalfa. He never did vomit anything and after awhile I stopped trying. He did struggle some while I was holding him, so I still had hope. I set him up overnight in a crate indoors with shavings for litter & just some water. This morning he was dead. He had some diarrhea during the night, which looked fairly normal except for being runny. I decided to do a necropsy, mostly because I was afraid I might have done something wrong. (I'm a former vet tech and have also processed some chickens, so the procedure itself was not scary and I had a good scalpel.) Well, I found two huge tumors, or chains of a couple tumors each (hard to say), along his neck. It seemed to start just inside his collarbone and extended up almost to his head. They were sort of attached by thin tissue to the esophagus, but not in it or the crop. He did have some alfalfa in his crop and may have been on his way to impaction, but the tumors seemed entirely unrelated to the digestive system. His liver seemed extremely large but looked good, nice and red. I took pics, I'll try to attach shortly. Any ideas? His 3 sisters, along with the adult birds (separated by a fence) all look fine. Any ideas? I've tried looking up chicken tumors here and on google and am not finding anything helpful. Any feedback is appreciated.