Little Owl box

It seems that someone has at last cracked the mystery of how to make a simple but effective box for Little Owls. The picture shows a scaled down model that I just made (2/3 life size, with Kiki's mini-teddy to give an idea of scale). The fun bit was finding a way to cut the circular entrance hole. This involved the purchase of an attachment to my Bosch hammer drill from Mackays in Cambridge, a shop modelled on Aladdin's Cave.
My next project is to build a full scale box (about 30 cm each dimension) using offcuts of plywood retrieved from one of the farms we visited yesterday.
And here, for those who have never seen one, is a Little Owl. It was introduced into Britain from the Continent in the eighteenth century and is now well-established in all suitable habitats.