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A Method for Investigating Population Declines of Migratory Birds Using Stable Isotopes: Origins of Harvested Lesser Scaup in North America
- Keith A. Hobson,
- Michael B. Wunder,
- Steven L. Van Wilgenburg,
- Robert G. Clark,
- Leonard I. Wassenaar
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- Published: November 25, 2009
- https://doi.org/10.1371/journal.pone.0007915