My birds are all pullets still with the oldest at 6 months so size I can't really address from experience.  My roosters are big but they don't get in the nests.   
  From what I have read it won't bother them.  All these nests, it seems that folks that put out a straw filled tray have fine success.  They sell for about $22 here.  Next year I will let you know if any of my fat hens like them.  
	
		
			
		
		
	
				
			
  From what I have read it won't bother them.  All these nests, it seems that folks that put out a straw filled tray have fine success.  They sell for about $22 here.  Next year I will let you know if any of my fat hens like them.  
	
 and i have never had a mite problem. bloody pesky little shits.
