I have a 3 yo Bourbon Red Tom. His mate was killed last year, so he rules over a bunch of assorted chicken hens. Over the last week or so he has started to challenge me a bit. Nothing too bad that a 2x4 doesn't fix. Is he getting more aggressive due to spring coming on and will he get worse if he doesn't have a mate? He didn't do this at all last year when he had his mate.