DAR ES SALAAM, Oct. 10 -- THE Peregrine Falcon became the fastest animal in the sky of savannah through a series of dramatic evolutionary changes that took place mainly over the last ten to two million years.

Different research works show it did not evolve from a fast bird that became faster, but from a small, falcon like ancestor that hunted insects and lizards close to the ground, in a niche that was crowded with hawks, eagles and owls.

On their side, palaeontologists say competition for food on the ground forced it to look up to an untouched food source.

From that point it followed other birds in full flight, and that single decision changed its entire body and attitude.

The wings were the first major transformation, to survive air...