Article
Hybrid songbirds employ intermediate routes in a migratory divide.
Ecology letters - 1 Oct 2014
Delmore Kira E, Irwin Darren E
Abstract excerpt
Migratory divides are contact zones between populations that use different routes to navigate around unsuitable areas on seasonal migration. Hybrids in divides have been predicted to employ intermediate and potentially inferior routes. We provide the first direct test of this hypothesis, using light-level geolocators to track birds breeding in a hybrid zone between Swainson's thrushes in western Canada. Compared...
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