It has been observed empirically that a flock of birds is able to turn and change direction of flight rapidly as a single unit. The "chorus-line hypothesis" was proposed in 1984 by Potts to explain this phenomenon. It puts forward the idea that those birds that are further down the line from the initiator can predict the movement from those nearer the initiator, thereby reducing their response time. Inspired by this biological phenomenon, this paper proposes an implementation of the chorus-line effect in a Cucker-Smale multiple agent system. We study the time it takes for the rest of the agents to follow an abrupt change in direction executed by one of the flock members. Through mathematical analysis and computer simulation, we found that the time required for this kind of manoeuvre tracking can indeed be reduced compared with the standard Cucker-Smale model. It is more effective than using finite-time control that has been studied earlier for smaller flocks. Furthermore, using finite-time control on the chorus-line incorporated model produces the shortest realignment time for all flock sizes considered.
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