I have two roos- both were supposed to be pullets. I definitely agree growing up with older birds is good for the roo! My older one, 'Chucky', is a 3 1/2 year old Golden laced Wyandotte and the younger, 'Ozzy' is a 9 month old black Australorp. Chucky has had his moments- he is sometimes aggressive but mostly not, so I have tolerated it. Ozzy is so terrified of Chucky that he isn't aggressive toward anyone. Chucky had been fine for months, then yesterday while I was giving them some birdseed as a treat, he tried to spur my shin. I wasn't doing anything different than I do any other day when I give them food, so who knows what goes through that tiny little brain.