The Phase Information Associated to Synchronized Electronic Fireflies
  An electronic implementation referring to fireflies ensembles flashing in synchrony in a self-organization mode, shows the details of the phase-locking mechanism and how the phases between the electronic oscillators are related to their common period. Quantitative measurements of the timing signals link the limits of a steadily established synchronization to the physics of the electronic circuit. Preliminary observations suggest the existence of bifurcation-like phenomena. 
Jean-Luc Guisset, Jean-Louis Deneubourg and Gonzalo Marcelo   Ramirez-Avila