Actual or Perceived Abundance? Interpreting Annual Survey Data in the Face of Changing Phenologies
| Autor: | McClure, Christopher J. W., Burkett-Cadena, Nathan D., Ligon, Russell A., Hill, Geoffrey E. |
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| Zdroj: | The Condor, 2011 Aug . 113(3), 490-500. |
| Databáze: | JSTOR Journals |
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