| 摘要 |
A birdcage has a movable wing above its door opening. The wing is pivotally mounted such that the wing can be rotated between a first position wherein the wing extends downwardly from its pivot axis to a level below the top of the door and a second position wherein the wing does not extend downwardly from the pivot axis to a level below the top of the door. The wing works in combination with a traditional latch that is located lower, along the free side of the door. Because the wing and latch are spaced apart, a bird cannot reach both at the same time and cannot unlock the cage. The wing also acts as a safety device that can be used to prevent leg crushing. When the cage door is open, the wing hangs down and blocks a portion of the door opening. If the cage door is inadvertently bumped, the door cannot swing fully to the closed position because the wing blocks its travel.
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