Thank-you for asking this. I have the same problem but with my duck food. I may purchase one of these feeders, but I may have to remove the screen to fit larger beaks. I fear that my ducks will freak out when the cover moves. I went from a bag of food every 6 months to one every two months because of the sparrows. Their population seems to have inflated because of all the food they have available now.
Oh... My ducks are bantam. Will 1.5-2 lbs be enough weight to open the feeder?
	
		
			
		
		
	
				
			Oh... My ducks are bantam. Will 1.5-2 lbs be enough weight to open the feeder?
			
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(those darn things I can't seem to get rid of them )
))
  "Adjustable from 1.5 pounds of pressure (for bantams) and 3 pounds of pressure (for full-grown full-sized hens) by removing a weight under the lid"  And I bet if I needed to, I'd be able to add more weight.
((