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Wrens' calls reveal subtle differences between subspecies


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#1 ScienceDaily

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Posted 27 December 2017 - 06:50 AM

Birds' songs and the ways they vary between places have been well studied -- but what can the simpler vocalizations known as calls tell us about bird biology? A new study provides the first detailed description of how Marsh Wren calls vary across eastern North America and hints at the evolutionary processes playing out between wren subspecies.

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