Technically, Puu is only a bird by chance. A Spirit Beast reflects the one whose spirit energy feeds them. No one knew what Yusuke's would appear as until after it hatched. Though, a Phoenix is appropriate, in hindsight.
Unfortunately, I can not speak on your particular situation. As Puu is essentially an embodiment of Yusuke, when Yusuke's power increased so did Puu. That may be true of your situation, but it also may not.
[Anything is possible, but he's not about to speak with any authority on something he has no idea about.]
Has anything like this happened to others from your world? That would likely be the best place to start for information.
no subject
Unfortunately, I can not speak on your particular situation. As Puu is essentially an embodiment of Yusuke, when Yusuke's power increased so did Puu. That may be true of your situation, but it also may not.
[Anything is possible, but he's not about to speak with any authority on something he has no idea about.]
Has anything like this happened to others from your world? That would likely be the best place to start for information.