Abstract: An improved poultry broiler cage comprising a plurality of stacked cage tiers. Each cage tier in turn comprises an elongated confinement area and a poultry-supporting floor movable longitudinally with respect to the confinement area between an operative position and an inverted, lower, inoperative position whereby poultry can be loaded and unloaded into and out of the confinement areas. Each floor is selectively responsive to a driven axle and comprises rails (preferably low friction) secured to opposite sides of the confinement area, a tension pulling member (preferably a chain) rides and is movable longitudinally along each rail. A plurality of spaced support bars extend between and are secured to the pulling members and a flexible floor material extends between the pulling members and preferably are supported in trampoline-like fasion on the support bars.