ELi5: If (most) nocturnal insects are attracted to light sources, why aren’t they just out and about during the daytime?
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They generally have very poor vision and are attempting to use the moon to navigate at night. If you keep the moon to the left you’ll be flying straight.
They mistake a light bulb for the moon and spiral into it, blinded and confused by the much-closer-than-expected light source that confounded their navigation.
They’re nocturnal for various reasons, usually to take advantage of night-blooming plants, make a mating racket in the quieter conditions, or avoid the large number of birds that are active during the day.
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