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Do migratory birds 'see' the magnetic field?

Researchers have identified a functional neuronal connection between retinal neurons and the brain's Cluster N region in migratory birds. This link suggests that migratory birds use their visual system to detect the geomagnetic field, supporting the hypothesis that they can 'see' the magnetic field.

SourcePLOS·JournalPLOS ONE·DateSep 25, 2007

New host species for avian influenza identified

Researchers have identified seven new host species for H5N1 avian influenza, including four goose species and the common gull, in a study of over 36,000 wild migratory birds. The findings provide important insights into the ecology and epidemiology of various global strains of the virus.

SourcePLOS·JournalPLOS Pathogens·DateMay 10, 2007

Light guides flight of migratory birds

Researchers have solved a 30-year puzzle on how migratory birds integrate multiple directional cues. They found that polarized light patterns play a key role in calibrating the birds' magnetic compass, providing an independent reference system. This discovery sheds light on the complex navigation systems used by migratory birds.

SourceVirginia Tech·JournalScience·DateAug 10, 2006