Sadly although Delaware chicks are yellow, they wouldn't have any brown markings. 
		
		
	
	
		
	I hope for your sake that the Australorp is a pullet. 
		
	
	
		
			
		
		
	
				
			
	
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	Sadly although Delaware chicks are yellow, they wouldn't have any brown markings.I hope for your sake that the Australorp is a pullet.![]()
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	The Australorp still could be a cockerels as it is so young, but it isn't showing signs of being one yet. I still think the other is a Red Sex Link cockerel.![]()
	
	
	
	
	
	I think the 3rd pic down looks like a roo