Bridget,

Canned salmon is loaded with calcium.

My son likes it in scrambled (quail) eggs. Just adores it.

>diet. I offer them alternatives to grains (ie meat!), they don't eat any
>sugar, and the 3 year old doesn't get milk. He has a multivit/mineral
>supplement, but is that enough to give him the nutrients that he may be
>missing? Should I be doing anything else? Your thoughts would be much
>appreciated.

As for doing something else, read carefully thinktwice.com