European nightjars don’t stay longer at rest stops just to take advantage of bright moonlit nights—they actually leave about a week after the full moon, following a set schedule instead of waiting for the best lighting conditions.

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Pro

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Against

Evidence from Studies

Supporting (1)

14

Community contributions welcome

14

The lunar cycle drives migration of a nocturnal bird

Cohort Study

Animal

2019 Oct

The study shows that nightjars migrate in sync with the moon, becoming more active after full moons because they can see better to hunt. This supports the idea that they follow a moon-based schedule rather than staying longer just to get more light.

Contradicting (0)

0

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

The lunar cycle drives migration of a nocturnal bird

Score: 14

DOI: 10.1371/journal.pbio.3000456

Similar Assertions

European nightjars seem to time their big migration flights with the moon — they all tend to take off together about 11 days after the full moon, like clockwork.

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82%

European nightjars stay up way longer and hunt more bugs on bright, moonlit nights than on dark ones — it’s like they’re using the moon as a nightlight to help them see their dinner.

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71%