Referenced from an article in Mother Earth News:

Compared to official US Department of Agriculture (USDA) nutrient data for commercial eggs, eggs from Free Range hens have:

1/3 less cholesterol

1/4 less saturated fat

2/3 more vitamin

2 times more omega

3 fatty acids

3 times more vitamin e

4 to 6 times more vitamin d

and

7 times more beta carotene