Migration Reversal: A Regular Phenomenon of Canada Geese

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Science  09 Jul 1976:
Vol. 193, Issue 4248, pp. 153-154
DOI: 10.1126/science.193.4248.153


Migration from a nesting to a wintering ground and back again in autumn was detected each year during a 3-year study of individually identifiable Canada geese (Branta canadensis). Reverse migrants were primarily yearling, nonbreeding individuals and others of nonfamily status.