What major geographic feature guides the migration path of Eastern White-crowned Sparrow breeders?
Answer
The Mississippi River Valley and the central/eastern US.
Migratory movements are not uniform across the species; they follow established continental corridors influenced by geography. For those populations originating in eastern breeding grounds, their southward migration tends to funnel them along established paths that naturally lead them through the Mississippi River Valley and the central and eastern regions of the United States en route to their wintering areas. This contrasts significantly with western populations, which often maintain closer proximity to mountain ranges or utilize Pacific coast flyways.
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