The bird was a master of wind and space from what Ning could see. He wasn't sure what energy it was using to manipulate them, but it was certainly stronger than the current him if he didn't use Aether.
"Screw you! You are not the only one with spatial skills here," Ning shouted even as his body was torn apart.
Aether released from his body and moved towards the bird's body. It struggled for a bit before moving inside the bird
Then, Ning created a point of absolute gravity which soon started devouring the bird as it stood.
The bird was able to resist for a bit. If not for him being several levels higher than the bird when using Aether, Ning would've likely kept on the struggle for much longer.
Right now, he simply added a bit more Aether and suddenly the bird crumpled in on itself as a tiny black hole grew in the space where it was.
Once Ning stopped putting in energy, the black hole disappeared, and so did the bird.