Here's some extra information about the TC tunnel in this link: http://forums.eyesonff.com/final-fan...tunnel-tc.html

But recently, I just found out that it wasn't just black birds that were travelling through the tunnel. Here's what I found:



So, it goes like this:

1) Time Compression starts.
2) Everything gets deformed; existing dimensions dripping into own liquid spheres.
3) Squall seen falling into the Ocean.
3) Then we get to see the Sky from other side of the Ocean.
4) A lot of black birds start appearing in the 'evening' sky.
5) The black birds start flying around together and then start forming into a tunnel.
6) The black birds travelling through the tunnel.
7) Some lightening strikes, the black birds then convert to white birds!
8) Hello, Ultimecia Castle.

This shows that the birds CAN change thier own form (from black to white or from white to black)
What does this say about Rinoa (White wings) and Ultimecia (Black wings) ?