  We present pathwise flocking dynamics and local sensitivity analysis for the
Cucker-Smale(C-S) model with random communications and initial data. For the
deterministic communications, it is well known that the C-S model can model
emergent local and global flocking dynamics depending on initial data and
integrability of communication function. However, the communication mechanism
between agents are not a priori clear and needs to be figured out from observed
phenomena and data. Thus, uncertainty in communication is an intrinsic
component in the flocking modeling of the C-S model. In this paper, we provide
a class of admissible random uncertainties which allows us to perform the local
sensitivity analysis for flocking and establish stability to the random C-S
model with uncertain communication.
