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the claim

Migratory birds navigate using Earth's magnetic field.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
6 sources for · 2 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 migratory birds navigate using Earth's magnetic field?

Yes. Reference works state that migratory birds detect Earth's magnetic field and use it to navigate during migration, and peer-reviewed studies report magnetic compass and map sense in migrating songbirds. A few older or narrower sources note unresolved questions about the mechanism and its role in migration.

Verdict: SUPPORTED · 6 sources for, 2 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 · 6
Earth's magnetic field
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Earth's magnetic field. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Earth%27s_magnetic_field

Evidence against · 2
Encyclopedia of Animal Behavior
2009
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Encyclopedia of Animal Behavior. (2009). play.google.com. https://play.google.com/store/books/details?id=U4ZiJh1yerwC&source=gbs_api

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More for · 5
Migratory birds use head scans to detect the direction of the earth's magnetic field.
2004
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Mouritsen, H., Feenders, G., Liedvogel, M., & Kropp, W. (2004). Migratory birds use head scans to detect the direction of the earth's magnetic field.. doi.org. https://doi.org/10.1016/j.cub.2004.10.025

The Earth's Magnetic Field and Visual Landmarks Steer Migratory Flight Behavior in the Nocturnal Australian Bogong Moth.
2018
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Dreyer, D., Frost, B., Mouritsen, H., Günther, A., Green, K., Whitehouse, M., Johnsen, S., Heinze, S., & Warrant, E. (2018). The Earth's Magnetic Field and Visual Landmarks Steer Migratory Flight Behavior in the Nocturnal Australian Bogong Moth.. doi.org. https://doi.org/10.1016/j.cub.2018.05.030

Magnetoreception - Wikipedia
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Magnetoreception - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Magnetoreception

No apparent effect of a magnetic pulse on free-flight behaviour in northern wheatears ( Oenanthe oenanthe ) at a stopover site
2022
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No apparent effect of a magnetic pulse on free-flight behaviour in northern wheatears ( Oenanthe oenanthe ) at a stopover site. (2022). doi.org. https://doi.org/10.1098/rsif.2021.0805

A strong magnetic pulse affects the precision of departure direction of naturally migrating adult but not juvenile birds
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A strong magnetic pulse affects the precision of departure direction of naturally migrating adult but not juvenile birds. (n.d.). cir.nii.ac.jp. https://doi.org/10.1098/rsif.2012.1047

More against · 1
Migration of Birds (1950)
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Migration of Birds (1950). (n.d.). gutenberg.org. https://www.gutenberg.org/ebooks/65173

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