Magnets interfere with pigeon homing.
نویسنده
چکیده
Magnets glued to the backs of experienced pigeons often resulted in disorientation when the birds were released from distances of 17-31 miles (27-50 km) under total overcast, whereas no such disorientation occurred during similar releases under clear skies. The magnets did, however, often cause disorientation when first-flight birds were released under sun, and there was some indication of disturbance to experienced pigeons released under sun at longer distances.
منابع مشابه
The avian hippocampus, homing in pigeons and the memory representation of large-scale space.
The extraordinary navigational ability of homing pigeons provides a unique spatial cognitive system to investigate how the brain is able to represent past experiences as memory. In this paper, we first summarize a large body of lesion data in an attempt to characterize the role of the avian hippocampal formation (HF) in homing. What emerges from this analysis is the critical importance of HF fo...
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The cues by which homing pigeons are able to return to a home loft after displacement to unfamiliar release sites remain debated. A number of experiments in which migratory birds have been treated with a magnetic pulse have produced a disruption in their orientation, which argues that a ferrimagnetic sense is used for navigation in birds. One previous experiment has also indicated an effect of ...
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The hippocampus (HF) of birds and mammals is essential for the map-like representation of environmental landmarks used for navigation. However, species with contrasting spatial behaviors and evolutionary histories are likely to display differences, or 'adaptive specializations', in HF organization reflective of those contrasts. In the search for HF specialization in homing pigeons, we are inves...
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متن کاملCombined recording of GPS positional data and EEG in freely flying homing pigeons reveals lateralised changes of hippocampal electrical activity upon approaching the home loft
Lesion studies have shown that the pigeon hippocampus is a critical structure for spatial mapping of the home loft area [1,2]. More recently, it was found that the left hemisphere of pigeons appears to play a role in homing mechanisms [7], while studies in caged migratory birds have indicated a possible left-hemispheric predominance of magnetoreception [8]. Since the occurrence of theta rhythm ...
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عنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 68 1 شماره
صفحات -
تاریخ انتشار 1971