Raw Navel Oranges have 1.4 times more energy per unit of mass than Frozen Fiddlehead Ferns, Unprepared, which is low in comparison to other foods. Frozen Fiddlehead Ferns having low energy density.
Nutrients data from USDA National Nutrient Database for Standard Reference by US Department of Agriculture, Agricultural Research Service, Nutrient Data Laboratory.
Recommended Dietary Allowances (RDA) compiled from U.S. Department of Health & Human Services , National Institutes of Health.