Above—If the birds require six rows of perches, the housing is overcrowded. This illustration shows how pullets should not be kept. Apart from the obvious overcrowding and the excessive number of perches, breeds are mixed, cockerels are being reared with pullets, and the floor is cluttered with troughs and other equipment. Left—The use of short lengths of perch should be avoided to reduce the number of places where timber touches timber. Red mite do not live on the fowls during the day but hide in cracks and crevices, and they prefer a hiding place near where the birds perch. Below—Types of perches designed to prevent infestation by red mite. Those on the left are supported on iron piping. Those on the right rest on cross-bars supported by wires attached to the rafters; they are not fastened to the bars and can be lifted for inspection. [Prater Niederer photos

New Zealand Journal of Agriculture, Volume 81, Issue 6, 15 December 1950, Page 564

Above—If the birds require six rows of perches, the housing is overcrowded. This illustration shows how pullets should not be kept. Apart from the obvious overcrowding and the excessive number of perches, breeds are mixed, cockerels are being reared with pullets, and the floor is cluttered with troughs and other equipment. Left —The use of short lengths of perch should be avoided to reduce the number of places where timber touches timber. Red mite do not live on the fowls during the day but hide in cracks and crevices, and they prefer a hiding place near where the birds perch. Below—Types of perches designed to prevent infestation by red mite. Those on the left are supported on iron piping. Those on the right rest on cross-bars supported by wires attached to the rafters; they are not fastened to the bars and can be lifted for inspection.

[Prater Niederer photos