Hgeons, management. 
549 
strips of zinc three inches above ground and six inches beneath, around 
the entire building of the inner places. 
The flight is made of a framework of 2 x 1/4 inch spars, with posts 
2x2 inches, and wire netting i l /> of inch mesh. It is, undoubtedly, a 
great saving of food to have the mesh of sparrow-proof size, but this is 
more expensive. The height of the flight is seven feet six inches, which 
enables you to walk upright in it, but not so high as to make the catch- 
ing of the birds laborious. There are three doors, 3x6 feet, to the 
flights, one communicating to the other flight. They are also fitted 
