I am not sure of his age. He seemed to be the same size, etc. when he was thrown over the fence to us - that was in June of 2017. Rudy has never shown aggression towards either of us. We are still very much novices when it comes to chicken behaviors, so everything is a guess, but he did seem a little aggressive to the two pullets when they first flew over the fence to join our tiny 'flock' of Rudy and Tootie. BUT, when they became laying age, they have become best buds. (The pullets are Tina & Rosie) Tina is like his little shadow - she laid her first egg this week. So, no he has never been aggressive, but those spurs seem to get bigger and bigger!
He is still limping around. Today was the 2nd day that our 3 babies (11 weeks tomorrow) were allowed to be with the others, unsupervised, all day. We had 20 to 30mph winds all day. The babies spent a lot of the day in the coop/run of the older birds - none of them seemed to care! I may try to catch him again tomorrow, but it really seems to stress him out as much as it does us!