196823.fig.009a
(a) Snapshot of the flocking birds and the artificial society
196823.fig.009b
(b) Density of the flocking birds
196823.fig.009c
(c) The epidemic status of the flocking birds
196823.fig.009d
(d) The epidemic status of the human  
Figure 9: The simulation results with the parameter min_separation = 0.25.