Upcoming solar maximum could scramble migrating birds' internal compass, new study shows

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Upcoming solar maximum could scramble migrating birds' internal compass, new study shows
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Harry is a U.K.-based staff writer at Live Science. He studied Marine Biology at the University of Exeter (Penryn campus) and after graduating started his own blog site 'Marine Madness,' which he continues to run with other ocean enthusiasts.

Migratory birds in the U.S. struggle to properly navigate when solar storms and other types of space weather disrupt their ability to sense Earth's magnetic field, a new study shows. The findings suggest that these birds may be seriously handicapped over the next few years as the sun ramps up toward its explosive peak — the solar maximum.

In the study, which was published Oct. 9 in the journal Proceedings of the National Academy of Sciences, researchers studied the migratory patterns of a wide range of nocturnal migratory birds over a 23-year period. This included perching birds, like thrushes and warblers; shorebirds, such as sandpipers and plovers; and waterfowl such as ducks and geese.

"Our results suggest that fewer birds migrate during strong geomagnetic disturbances and that migrating birds may experience more difficulty navigating," study lead author Eric Gulson-Castillo, a doctoral candidate at the University of Michigan, said in the statement. This was most apparent during autumn, he added.

A large majority of the birds from the study seemed unaffected by space weather. However, for a small minority, failed migrations seriously reduced their chances of survival due to missing out on better weather conditions, easily available food and potential breeding opportunities.During solar maximum, geomagnetic disturbances become more common as the sun spits out more CMEs and solar wind becomes stronger.

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