They have to be fully feathered out before they can go outside - I hatch my own & they start out in a big cardboard box w/a heat lamp in the utility room. At about 5-6 weeks of age -- when their heads have feathers - that's the last part to feather out completely - they go into an outside brooder also w/a heat lamp (esp this time of year). This brooder is off the ground - I am a big believer in keeping my young chicks & peachicks off the ground - esp. the peas -- it is almost always fatal to them as they are delicate - they can pick up worms & stuff & get chilled too easily if they are down on the ground, and esp. if it's an area where poultry have been kept before. Diseases can stay in the soil for years and years. You can't be too careful.those are cool. but if they're babies, you have to keep them indoors with a heat lamp? like, how old before they go roaming by themselves in the coop/run?
When they get about 3 months old, they go into our chicken tractor and they stay there until about six months of age when they are finally integrated into the main laying flock. They are wormed at 3 months of age & again before going into the main flock.
We started out with the chicken tractor & 3 hens originally, which we bought as chicks from Meyer hatchery. We built our tractor in a weekend & moved it about once a week. We still use it.