Ernie Didur sent a few photographs of their signature Manitoba Taverner House with the front sliding entrance door. The door slides vertically behind the cut out entrance perches to close off the entrances for the winter by using a simple nail to keep it in place. It can be found on the Purple Martin Bird House Plan Page. Scroll down until you find the two photos illustrating their entrance door concept. Thank you Ernie and Clyde for your ingenuity.