Abstract: An enclosure for poultry is described which has a feeding floor with openings to allow the feeding of the poultry housed therein. The enclosure is provided with a partition which is used to change the effective size of the openings through which the birds gain entry to the feed trough. Smaller openings, suitable for small birds and large openings, suitable for larger birds, are thus provided. When not in use, the partition is pivoted to a vertical position, away from the cage floor so that it does not interfere with the movement of the birds.