P. Other natural or manmade factors affecting the species continued existence. 



No other natural or manmade factors are known to be affecting the species. 



E. Inadequacy of existing federal regulations. 



Federal migratory bird harvest regulations covering harlequin ducks are based on monitoring 

 and harvest data that may be inadequate to detect impacts on the Rocky Mountain subpopulation (see 

 overharvest). 



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