Birds fly through and inside clouds during migration and high-altitude flight.

the verdict

REFUTED

the evidence says no

Recorded sources

0 sources for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Evidence indicates that migrating birds generally avoid flying through clouds and fog to maintain visibility and navigation.

The analysis

The claim states that birds fly through and inside clouds during migration and high-altitude flight. However, the retrieved literature indicates the opposite: studies show that migrating birds actively avoid clouds and fog to preserve visibility and navigation. Therefore, the claim is refuted by the provided evidence.

Evidence against · 2

Migrating birds avoid flying through fog and low clouds.

Recorded source metadata

M Panuccio, G Dell'Omo, G Bogliani, C Catoni, N Sapir. Migrating birds avoid flying through fog and low clouds.. 2019. https://doi.org/10.1007/s00484-018-01656-z

This study demonstrates that migrating birds actively avoid flying into fog and low clouds.

Source citation format

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More against · 1

Far eastern curlew and whimbrel prefer flying low - wind support and good visibility appear only secondary factors in determining migratory flight altitude.

Recorded source metadata

Batbayar Galtbalt, Amanda Lilleyman, Jonathan T Coleman, Chuyu Cheng, Zhijun Ma, Danny I Rogers, Bradley K Woodworth, Richard A Fuller, Stephen T Garnett, Marcel Klaassen. Far eastern curlew and whimbrel prefer flying low - wind support and good visibility appear only secondary factors in determining migratory flight altitude.. 2021. https://doi.org/10.1186/s40462-021-00267-5

This study finds that migratory shorebirds avoid clouds during flight, preferring lower altitudes to facilitate navigation and avoid adverse weather.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → REFUTED · 1001 Aug 2026

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