my beardies

Question
Ok so I have a 2 year old beardie that I have had for about a year and recently I acquired a 6 month old male and a nine month old female. I separated the males from the females because i didnt want them to mate while she was too young but she would challenge the older males dominance by nodding her head violently toward him but he wouldnt respond. Then the 6 month old male has been nodding his head and the older male has been submitting to him. also the older male is about double the younger ones size.

Is the behavior of the older male normal because I thought he would try and be the dominate dragon in the cage.

Answer
Your question was sent to the pool, but I will answer it:

All head bobs do not indicate dominant territorial behavior. The amplitude and frequency of the bob has much to do with it.

Head bobs from a female may indicate that she is receptive and looking for attention.

The older male may not be submissive at all. He may just not be bothered by the smaller ones. If he were submissive to another Beardies dominance, he would probably indicate so by an arm wave. The older male may also be stressed given the captive situation, and the younger one's just have not caught on yet. In time, they may stress as well.   

It is not a good idea to have Beardies ( especially males ) together in a tank when there is such a substantial difference in size. Beardies are known for being territorially aggressive, and larger Beardies will often attack a smaller one. If it is smaller, then it is usually food, if not a challenge to his territiory. It is not wise to test the older one with the lives of two juveniles.

I hope you also are aware that Beardies need lots of territory, and as these grow you will need a habitat on the order of a couple hundred gallons minimum when these are full grown. Forcing them to interact in a smaller habitat is not good.

http://www.beardeddragon.org
http://www.anapsid.org/bearded.html