Lots of definitions on free range. But basicly it is a bird that is allowed to enter and leave the coop at will, and has a large area for pasture, it can have a fence, or not, whatever you want. If you are able to move lots of goats milk then you would proably be able to move lots of eggs too. If you have any kind of winter, you will have to have something to house them in, they require about 1.5 feet of room per bird. Your houseing should be preditor proof, and even in the summer you need to have housing of some type that is preditor proof, or you won't have too many birds left. I would not count on chickens being able to roost high enough to survive a coon, as coon are very good climbers.
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