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← Nature & AnimalsWhich migration trajectory error affects European robins when localized magnetic anomalies disrupt alignment?
A)Compass needle reversal occurs suddenly.
B)Geographic positioning becomes sporadically unstable.
C)Improper navigational heading causes east-west drift.✓
D)Circadian rhythm adaptation becomes temporarily impossible.
💡 Explanation
Improper heading occurs because magnetic anomalies cause distortion of the primary migratory orientation mechanism, their internal magnetic compass. Robins rely substantially on geomagnetic perception; therefore directional error affects flight paths over extended migrations; rather than directly affecting fundamental temporal rhythms.
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