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the claim

Butterflies migrate thousands of miles.

the verdict
INSUFFICIENT LEANING
Recorded sources
9 sources for · 0 against

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

Is it true that Butterflies migrate thousands of miles?

Unclear. Multiple reference and peer-reviewed sources state that monarch butterflies migrate thousands of miles (or kilometers) to overwinter. None of the placed items shows that butterflies generally, beyond monarchs, migrate thousands of miles.

Verdict: PARTIAL LEAN · 9 sources for, 0 against · Last checked

Evidence for · 9
Butterflies
2012
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1969-, G. D. (2012). Butterflies. archive.org. https://archive.org/details/butterflies0000gall

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More for · 8
Butterflies
2003
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Ann, H. (2003). Butterflies. archive.org. https://archive.org/details/butterflies0000hein

Butterflies
2016
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Butterflies. (2016). ebookcentral.proquest.com. https://ebookcentral.proquest.com/lib/kxp/detail.action?docID=5734024

Winter Butterflies in Bolinas
Get citation
Winter Butterflies in Bolinas. (n.d.). gutenberg.org. https://www.gutenberg.org/ebooks/66247

Seasonal plasticity in morphology and metabolism differs between migratory North American and resident Costa Rican monarch butterflies
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Seasonal plasticity in morphology and metabolism differs between migratory North American and resident Costa Rican monarch butterflies. (n.d.). api.semanticscholar.org. https://api.semanticscholar.org/CorpusID:249929910

Monarch Butterfly Migration and Overwintering
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Monarch Butterfly Migration and Overwintering. (n.d.). fs.usda.gov. https://www.fs.usda.gov/wildflowers/pollinators/Monarch_Butterfly/migration/index.shtml

Maintenance and Loss of Migration and Migration-Associated Phenotypes in Monarch Butterflies
2020
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Maintenance and Loss of Migration and Migration-Associated Phenotypes in Monarch Butterflies. (2020). doi.org. https://doi.org/10.6082/tgx3j-ch671

Florida trails as seen from Jacksonville to Key West and from November to April inclusive
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Florida trails as seen from Jacksonville to Key West and from November to April inclusive. (n.d.). gutenberg.org. https://www.gutenberg.org/ebooks/66052

natureencycloped0000gcly
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natureencycloped0000gcly. (n.d.). archive.org. https://archive.org/details/natureencycloped0000gcly

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held for human review17 Oct 2026
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