They actually rely on their daylight vision and cannot fly during the night with no moonlight.
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Related: moonlight, daylight
Prev: Wu said it would be similar to how we get moonlight, but he predicted that the man-made moon would have eight times the brightness of the real one.
Next: I replied, "Yes, that is so." And, without saying anything more, I looked across the ridges of sand that were stretched out before us in the moonlight.