These are the houses I keep my calls in. They can house as many as 8 calls at one time very comfortably. They are 3' wide by 6'6" long and total height is 5'. I have several 8' long that I use for outside brooders but they are not framed for sunken pools.
Winter Pens for the Colored Calls - Each Pen conisists of a 8' x 10' Stall and 10' x 16' outside run. Each stall has a heated water fount for drinking and the outside run has pools for swimming. The calls are locked in the stalls of the night.