From publisher blurb:
SEERS, NOMADS, CRAFTERS
The Shyanthry are cosmic nomads. The precise origin of their journey is unknown, and none ever speak of their final intended destination nor will they acknowledge if such a destination even exists. Their time in any one settlement can be as short as a few weeks or as long as a century, but eventually the society will come to the decision to move on. An outpost is often left behind, peopled by a small conclave or even a single watcher left behind.
Eternally on the move throughout space, the migration patterns of the shyanthry are defined by a song in the spheres that no other creature can hear. They are often insular and guarded, though their cultural Knowledge of raw matter manipulation has made them famous (and prosperous) wherever they go. A shyanthry's respect is difficult to fully win, but once one can be called a friend, they are as good as family.