I Missheard

The Dragon landed on the ground, causing the area to tremble slightly. The three Birds were all under Grey's control at the moment. As much as he wanted to leave them so they could be natural, he didn't want to take the risk of them giving him away to the Dragon. 

A smaller silver Dragon landed on the side of the larger one. The larger Dragon had a darker color, brown to be precise. Its size and features made it look intimidating. 

From what Grey recalled from Melmera's memories, the name of the son of the Tribe Leader is Sirevius, seeing the duo present there, he didn't need anyone to tell who was who. Sirevius is the larger Dragon, while the smaller one was his guard. The fact that the smaller Dragon is actually stronger is quite deceiving. 

Grey was currently hiding, he tried to sense the cultivation stage of the smaller Dragon, but to his surprise, he couldn't sense it from the body of the Birds.