What should my house to go door to the outside?

Chicken Coop door to the barn: question : How big should go outside my front door to be I Silkie chicken. What was the opening to go outside. I was just outside the Coop and I need to do to leave an opening for them. Suggestions? Thank you 4 your answer aideMeilleure : Response time of Mama Mia the hatch (hive) must be a appox 12x12 because a silkie chicken 2-3 kg and be less than 12 cm at the end of the term is. Jolie looking chicken! Write answer to this question below!

Building a Chicken Coop