Assertion: dove's population | /r/CapableOf | hunt bird
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text: Yet it has also been suggested that the species was rare prior to 1492, and that the subsequent increase in their numbers may be due to the decrease in the Native American population (who, as well as hunting the birds, competed with them for mast) caused by European immigration, and the supplementary food (agricultural crops) the immigrants imported (a theory for which Joel Greenberg offered a detailed rebuttal in his book, A Feathered River Across the Sky).