I may be adding a single, year old hen to an existing flock of three (aged 5-6 years old) tomorrow. Her current owner has had her for one month and she thinks she needs more room. My pen is 12x7. I have a pet carrier/dog crate I can put her in for during the day (in the coop), but am concerned about roosting in the coop at night with the others. Thoughts? EDIT: I don't have an additional coop or secure place to quarantine outside, away from the coop. Can I quarantine in the basement? She'd have a bunny for company (not in contact, but same room).