Currently my 6 city chickens own the back part of my "tool shed" which is appx. 12 foot long, 7 1/2 tall and 8 feet wide. I would like to make the front half for white homing pigeons which I do not have yet, but will soon. My question is, can I just add roosting poles, perches and nest box areas and let them go where they please inside the shed? Do I need to fence off the interior so when I open the door to enter they do not escape or will they likely not try to get out as I come in? If I fence off the interior so they only have a section of it the area will be appox. 3 1/2 ft wide, 8 ft long and 7 1/2 ft tall. Do they NEED an aviary?- I wasn't planning on one until early spring. My plan is that once old enough they will be trained to fly home for "white dove releases" for a church nearby. Also, the chickens are confined to the back portion of the shed and while the pigeons would be able to fly over to them if they wanted, the chickens cannot enter what would be the pigeon side. I hope my explanation makes sense. Basically, I am just trying to figure out how to set up the area for the pigeons and if they really need to be confined with fencing/netting inside the shed or not and what others have done when housing pigeons in a tool shed type housing. Thanks in advance for your help everyone!