The young bucks are very minor characters in the film Bambi and Bambi 2.
Bambi
The bucks are only seen once in the film. They are seen doing their annual run out in the meadow. Two of the bucks are seen using their antlers in a fight for one of the does out on the meadow (Faline's mother and Bambi's mother both already have mates.) The bucks stop when the Great Prince of the forest walks out on the meadow.The last time you see them is when Man is trying to hunt them after their run when their eating.
Bambi 2
The bucks are only seen using their antlers to fight and then they're doing their annual run being lead by Bambi and the Great Prince.