Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Design an experiment that would help confirm the cause of a phenomenon.

### Input:
The curious observation of birds appearing to fly more erratically during full moons.

### Response:
An experiment could be designed to test the effect of light levels on bird motion. Birds could be put in a dark environment and a light environment, both of which could be compared to the natural environment during a full moon. Bird motion could be measured both in darkness and light to see if there is a significant difference in flight patterns.