I rescued battery hens last year. Be aware that you don't know what 'state' your hens will be in yet. You may well have to nurse them through the first couple of weeks. They may well be so bad that they can't stand.

They love cuddles so lots of love will get them through.

They will probably not want to come out of their hen house at first because they have never experienced sunlight, wind, rain, ground/floor etc.

Mine were pretty stunned at first but soon adapted and are a joy. So loving. Enjoy!