We investigate the photon statistics of the light emitted by single
self-assembled hybrid gold-CdSe/CdS/CdZnS colloidal nanocrystal supraparticles
through the detailed analysis of the intensity autocorrelation function
g(2)(τ). We first reveal that, despite the large number of nanocrystals
involved in the supraparticle emission, antibunching can be observed. We then
present a model based on non-coherent F\"orster energy transfer and Auger
recombination that well captures photon antibunching. Finally, we demonstrate
that some supraparticles exhibit a bunching effect at short time scales
corresponding to coherent collective emission