I was thinking of building a fire place insert coop for one little modern game bantam hen. She is like stuck to me like glue! She is the freinliest bird I have evre raised and I don't want anything happening to her Wher it start dropping below 0. She has lived in my room all of her life and was the only one that hatched that batch. Her house( Which is only for at night) will be about 3 feet by 2 feet anf 2 feet tall. LOts of ventilation. She will be running around with me all day with her diaper on. She Is the sweetest little banty ever.