| 摘要 |
A cage for housing birds or small animals is fabricated from a transparent rigid material and has a plurality of walls, ventilation holes formed in the walls, an access door, a bottom tray, a feeder, perches, and a pair of cage top panels, each of which is hingedly attached to the walls. The cage top panels open to a vertical position and a playpen perch is placed between and attached to the opened cage top panels thereby forming a self-contained playpen top.
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