  We use the method of the microscopic phase density to get the kinetic
equation for the system of self-propelled particles with Vicsek-like alignment
rule. The hydrodynamic equations are derived for the ordered phase taking into
account the mean-field force only. The equation for the hydrodynamic velocity
plays the role of the Euler equation for the self-propelled Vicsek fluid. The
hydrodynamics of such ideal self-propelled fluid demonstrates the dynamical
transition from disordered initial state to the completely ordered motion. To
take the noise into account we consider how the framework of the local
equilibrium approximation affects the hydrodynamic equations and the viscous
tensor and show that in such approximation the shear viscosity vanishes.
