Check out the latest themed issue of Swarm Intelligence. Here is the freely available introduction. Nice to see the term “cognition” used since I have been using the term in this regard for a few years.
Swarm Cognition
ants, cognitive science, cognitive systems, collective intentionality, computational intelligence, distributed cognition, distributed knowledge, extended cognitive systems, extended mind, externalism, neuron, neurophilosophy, philosophy of mind, philosophy of social science, stigmergic, stigmergic cognition, stigmergy, swarm, swarm behavior, swarm intelligence
manwithoutqualities 