The original description of Sinornithomimus concluded that the dinosaur was a gregarious species that was very happy and at home with the idea of being in a herd. This was decided on based on the fact that the original material was a slab consisting of 8 individuals intertwined plus various other finds in the same area. The material was described by Kobayashi and Lu in a 2003 paper in Acta Paleontologica Polonica. Very little other scholarly work has been done on the dinosaur, however, it has been used to discuss similar genera and species within the ornithomimid group. The similarity of these kinds of animals to one another is interesting and it is therefore strange that a massive comparison piece has not been attempted as yet, but I have no doubts that there will be at some point.