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the claim

Eagles have visual acuity roughly two to three times sharper than typical human 20/20 vision.

the verdict
CONTESTED PARTIAL
Recorded sources
2 sources for · 1 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 Eagles have visual acuity roughly two to three times sharper than typical human 20/20 vision?

Partly. One reference estimates eagle eyesight at 4 to 8 times stronger than average human vision, while peer-reviewed reviews confirm eagles have high visual acuity but give no specific 2-3x ratio. The evidence partially addresses the claim but does not settle the exact magnitude.

Verdict: CONTESTED PARTIAL · 2 sources for, 1 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 2
Visual adaptations of diurnal and nocturnal raptors.
2020
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S, P., M, M., & A, K. (2020). Visual adaptations of diurnal and nocturnal raptors.. doi.org. https://doi.org/10.1016/j.semcdb.2020.05.004

Evidence against · 1
Eagle eye - Wikipedia
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Eagle eye - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Eagle_eye

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More for · 1
Ecological and morphological correlates of visual acuity in birds.
2024
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EM, C., E, F., & LA, K. (2024). Ecological and morphological correlates of visual acuity in birds.. doi.org. https://doi.org/10.1242/jeb.246063

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