I found this recipe for breakfast bars, and I would like to make some ahead of time and then give them to the kids on the go, to make mornings easier.  As my kids will be eating these most days, I want to remove the sugar as much as possible.  First question:  what is the binding agent in these?  Is it the sugar or the syrup, or something else?  Second question:  if I wanted to remove the added sugar (to Weetabix levels), what is another binding agent I could use?  I see some people using banana, but I would like some other options as one of the girls struggles when she eats too much banana. 
27% is the percentage of raw bone in a chicken leg.  Source: Bone Percentage in Raw Meaty Bones 