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the claim
Bats are not blind and can see in dim light as well as navigating by echolocation.
the verdict
INSUFFICIENT LEANING
Recorded sources
8 sources for · 0 against
Is it true that bats are not blind and can see in dim light as well as navigating by echolocation?
Unclear. Several sources confirm that bats are not blind and have eyes adapted for very low light, and that they use vision alongside echolocation for navigation. However, the same sources note that insectivorous bats' eyes are degraded and lack sharp visual acuity, so none establishes that bats see in dim light as well as they navigate by echolocation.
Verdict: PARTIAL LEAN · 8 sources for, 0 against · Last checked
Evidence for · 8
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Animal echolocation. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Animal_echolocation
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More for · 7
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Bats: Vision or echolocation, why not both? - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1016/j.cub.2022.02.049
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He-Qun, L., Jing-Kuan, W., & Bo, L. (2015). Divergence of dim-light vision among bats (order: Chiroptera) as estimated by molecular and electrophysiological methods. zenodo.org. https://doi.org/10.5281/zenodo.13447108
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P., M. G., M., C. P., & C., D. D. (2015). Ultraviolet Vision May be Widespread in Bats. zenodo.org. https://doi.org/10.5281/zenodo.13458248
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Pm, G., Pm, C., & Dc, D. (2015). Dim ultraviolet light as a means of deterring activity by the Hawaiian hoary bat Lasiurus cinereus semotus. zenodo.org. https://doi.org/10.5281/zenodo.13469578
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M., C. P., M., G. P., & R., S. B. (2021). Influencing Activity of Bats by Dimly Lighting Wind Turbine Surfaces with Ultraviolet Light. zenodo.org. https://doi.org/10.5281/zenodo.13460903
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Engineering Acoustics/Echolocation in Bats and Dolphins. (n.d.). en.wikibooks.org. https://en.wikibooks.org/wiki/Engineering_Acoustics/Echolocation_in_Bats_and_Dolphins
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Zhao, H., Ru, B., Teeling, E. C., Faulkes, C. G., Zhang, S., & Rossiter, S. J. (2009). Rhodopsin Molecular Evolution in Mammals Inhabiting Low Light Environments. doi.org. https://doi.org/10.1371/journal.pone.0008326
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