They were largely humanoid but had feathers instead of hair. They had certain physiological traits more common to avianoids than humans.
The native D'Strom culture was destroyed and overwritten by the M-5 2.0, It is unknown if "D'Strom" was even their original name for themselves or a corruption of "Daystrom" the original inventor of the M-5.
In 2370, the M-5 2.0 was over written with the M-5 2.1, which was a much more passive and personal servant to people. Recovery of the D'strom began.