I hate to tell you what I have seen my chickens eat but my chickens are true free range chickens. They actually eat a lot of grass and plants, they love worms, insects and grubs. They like Angel's dog food and will even eat some stuff that buzzards find appealing. They pick and scratch through the manure piles as well.
The magazine article says that after their testing of free range eggs and factory produced eggs was completed, they found that Free Range Eggs had the following:
- 1/3 less cholesterol (some that they tested even had 1/2 less)
- 1/4 less saturated fat
- 2/3 more vitamin A
- 2 times more omega-3 fatty acids
- 3 times more vitamin E
- 7 times more beta carotene