An ornamental light display system; the ornamental light display system includes at least one light device configured to provide periodic illumination simulating that of an insect utilizing bioluminescence (i.e., firefly). The light device(s) can be attached to branches within shrubbery, tree trunks, lower branches of trees, and other such areas in order to mimic how fireflies behave. The ornamental light display system is useful for providing ornamental lighting for decorating areas such that they appear to have fireflies.