A cage is provided which is sanitary and efficient and can make hens who tend to gather at the four corners scatter. An oblong and rectangular cage having a floor formed to allow hens and cocks to move freely thereon. The cage includes an outer peripheral section substantially surrounding the entire floor and allowing air to freely pass through it. The cage also includes a plurality of intermediate partitions that are arranged transversally relative to the floor to divide the oblong space on the floor. The intermediate partitions have visually blockading surfaces in order to produce corners that are as relaxing to hens as the four corners.