i have a 7' 5 foot wendy house that has 2 layers and most of the 11 girls that are in there all sleep on the higher level and only one uses the bottom perch but i am looking at making all round shelter for all my girls so i was thinking of putting the 8 ex batts into the wendy house with the other 11 and turning thier 6'4 shed into my shelter but would 20 birds live ok in my wendy house or is it to small .