Patent ID: 8020517

Claim:
A poultry cage assembly comprising: a plurality of improved poultry cages each comprising: a substantially flat floor panel; four wall panels, each with a bottom end and a top end, each bottom end comprising a groove for detachably coupling each wall panel to the floor panel with a tongue and groove joint; a substantially smooth protrusion extending across the top edge of, and perpendicular to, each of the wall panels such that at least as portion of the protrusions overlap when the wall panels are coupled to the floor panel; and a mechanical fastener operable for detachably coupling each protrusion to each adjacent protrusion where they overlap; and a substantially smooth, flat roof panel for enclosing the top of the topmost of the plurality of improved poultry cages; wherein the groove on the bottom of each wall panel is open on three or more sides; wherein the floor panel of each improved poultry cage acts as a roof panel for each adjacent, lower improved poultry cage; and wherein the floor panel, the wall panels, the protrusions, and the roof are constructed of a unitary and durable polymer material.