If this hook is unfastened the wooden support falls down and the box of nests slips off the cleat into your arms.
Pigeons are not good at perching upon twigs or sticks. Their feet are adapted for walking upon flat surfaces, and they need a broad surface for a roost. Fig. 40 shows how to make a pigeon-roost, which may be hung up against the wall by slipping the two holes bored in the top of the back board over a couple of nails in the wall.
For a Hen-Roost,
nail a narrow strip of wood, with its flat side upon the thin edge of another similar strip. The end will then look like a T, Fig. 38.
Round off the edges of the perch with a plane or knife until it is of the form of the right-hand diagram.
Fig. 37 shows a roost of this kind. Fig. 36 shows the adjustable side-rail, with slots for the perch to fit, and Fig. 39 shows a cleat to nail against the wall for the other end of the roost. As may be seen, the perch will fit in the slot in the cleat.
Drinking-Troughs.
Figs. 41 and 42 are drinking-troughs, arranged so that the birds will not soil the water.
