So yesterday afternoon about 4 I went out to feed my chickens. I have 2 different pens in the first pen are 3 Rhode island crosses and a sex link roo. He's always been a bit aggressive and he's newish I introduced him a month or so ago. Anyway I noticed he and the lead hen have been getting more and more aggressive in general. They aggregate each other and peck at everyone and anyone who tries to feed them and my girls have totally stopped laying and I'm in GA so that's unusual because the weather is still nice this time of year. Then yesterday I found the roo dead as a door nail face down it looked like he has been attacked from behind all the feathers on the back of his neck were plucked and a small portion on his back and the feathers were all over the pen and only in the pen. I checked the pen there's no holes or broken boards and I checked him out pretty good and I found no bite marks or open wounds and my girls were and are totally fine. My hens are roughly the same size as the rooster was, is it possible my lead hen did it. She's killed before and I had to remove 3 other hens from her run because she was aggressively bullying 2 and I caught her trying to kill a 3rd. Is it possible she just got the better of the roo and killed him to?