I've kill tons of Mythical red deer at one need zone every day but they always came back as Mythical one again. I've never met diamond one like that way. If you take the animals that has just below diamond level like 8(Mythical) or 4(Easy), that will proooooooooobably respawn to 9 or 5 level one. I've heard somewhere that kill high level makes high level respawn.

But take care of your reserve, finding many need zone and big herd may can help you. Originally posted by lactualy:First of all, congratulation for your diamond bro! Basically finding diamond is all about luck.