The humble pigeon is capable of sensing and navigating via the Earth's invisible geomagnetic field and scientists have long been interested in how this is possible.
STOCK PHOTO/Getty ImagesMany animals can sense things that humans cannot -- the humble pigeon, for instance, is capable of sensing and navigating via the Earth's invisible geomagnetic field. Scientists have long been interested in how this is possible. Now, a newpublished in the journal PNAS suggests that promising structures in the pigeons' inner ears are not, in fact, the answer.
They found that the cuticulosomes were five orders of magnitude too weak to function as particle-based magnetoreceptors, potentially eliminating them as options for how pigeons navigate. The results also suggest that the technology used in this study could be useful in investigating how other animals use magnetoreception or use magnetic substances in their bodies.
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