A good rule of thumb on speculum coloration to distinguish Mallards from Mottled Ducks and  Black Ducks is:
 
Mallard : 2 white stripes (top and bottom) 
Mottled  Duck: 1 white stripe (bottom)
 Black Duck: 0 white stripes 
 
		 
		
		
		
		
		
		
			
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				The cops are the experts on the current criminal trends. If they have determined that a “high capacity” semiautomatic pistol and a .223 semiautomatic rifle with 30-round magazines are the best firearms for them to use to protect people like me and my family, they are obviously the best things for us to use to protect ourselves and our families .
			 
		
		
		
		
		
	
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