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Old 08-06-2010, 05:39 AM   #1
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Default Migrating Birds Canít Control Themselves

Migrating Birds Canít Control Themselves
July 30, 2010

Migrating birds can’t control themselves
excerpt from above:
University of Wisconsin-Madison researchers studied the effects of migratory status and sleep deprivation on the ability of a group of sparrows to master the urge to peck at a food-giving button.

According to study director Ruth Benca, "In the wild, despite marked reductions in apparent opportunity to sleep, birds continue to successfully engage in prolonged flight, complex navigation and predator evasion during migration. In the laboratory, we've previously found that birds in the migratory state can learn to peck at a switch for food as well as birds during non-migratory periods. In contrast, in this study we demonstrate that, relative to birds in the non-migratory state, they struggle to learn when not to peck."

This apparent hyperactivity during the migratory period may be linked to the fact that the migrating birds' sleep periods become...
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