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Article: Lund University publishes research in experimental biology.
- Article from:
- Science Letter
- Article date:
- November 17, 2009
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According to recent research published in the Journal of Experimental Biology, "The interaction and hierarchy of celestial and magnetic compass cues used by migratory songbirds for orientation has long been the topic of an intense debate. We have previously shown that migratory Savannah sparrows, Passerculus sandwichensis, use polarized light cues near the horizon at sunrise and sunset to recalibrate their magnetic compass."
"Birds exposed to a +/- 90 deg. shifted artificial polarization pattern at sunrise or sunset recalibrated their magnetic compass, but only when given full access to celestial cues, including polarized light cues near the horizon. In the ...
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