How One Bird Became a Better Migrant

How One Bird Became a Better Migrant

Daisy Yuhas
Published: 10/07/2013

Today, some of these birds travel much smaller distances, constrained by the genes passed on by black-fronted ancestors, while others travel wider swathes of North America, doing their myrtle foremothers proud. 

 

(Caption: This map from Toews, et al shows the breeding ranges, migratory behaviour and distribution of mitochondrial DNA (mtDNA) in four groups of yellow-rumped warblers. New data from Toews and colleagues demonstrates that the area where there is a transition in mtDNA is also home to a shift in migratory behaviour, from residents to migrants.)

[Map of DNA migratory behaviour and distribution of mitochondrial DNA in four groups of yellow-rumped warbler. Credit: David Toews, UBC]

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