Science

Genetic ancestry plays a key role in the migration of Cory's shearwaters

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 11/11/2026, 01:10:24 UTC.

Briefings

A 2026 study published in Molecular Ecology found that genetic ancestry is a stronger predictor of Cory's shearwater migration routes than social environment at breeding colonies. This research challenges the long-standing assumption that social factors dominate migration decisions for this seabird species.

Key points

• A 2026 study in Molecular Ecology concluded that genetic ancestry is a more significant factor than social environment in determining Cory's shearwater migration routes.

Context

This finding addresses a long-standing question about seabird migration, specifically for Cory's shearwater, where social factors were previously thought to dominate over genetic influences.

Limitations

The study is limited to Cory's shearwater and does not provide data on other species or broader population-level impacts.

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