The finches and other birds enjoy the shells for the calcium.  I also add some other goodies like kelp powder, handfeeding formula, peas, carrots, green beans, corn, a bit of bird seed, dried herbs, pee pollen, and some various pellets.  It always smells good when I'm done and they love it.
	
		
			
		
		
	
				
			
	



 if their diet is in need of extra calcium
		
	
