Along with the flapping, the robotic bird included a small sound generating system to play authentic calls and swamp noises.

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If the caxirola follows the fate of the vuvuzela or rattle, Brazil has a Plan B involving the production of a plastic version of the indigenous pedhua whistle, which mimics bird calls.

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Early-bird optimists bought August 5 strike calls, which would require a 25% jump in the space of the coming two weeks.

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Once the motor was in place and the robot chip was programmed, the mounted bird was put in the wild along with a discreet sound system playing swamp sparrow calls to attract others.

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