No. I'm pretty sure that a bird that size would not go unnoticed.
the ostrich
he is still alive
Yes
Cassowary
Saurus Crane
Cassowary, if he can break the terror bird's chest with his head crest or kick him in the face. Then yet again, the terror bird has a huge beak and if the cassowary charges, the terror bird can break his neck. Juvenile terror bird wins 7 out of 10 bouts.
The albatross is the worlds largest ocean going bird and is still very much alive.
YES i am pretty sure she is she is aquaintances with my grandma and i am pretty sure she still alive.
Yes, there are several species.
I posted in the related links box below an article on the terror bird.
Terror Bird
yes they changed into bird over time