Here are a couple of topics about hospital cages. The first one was built by a member and her hubby and has a wire front
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This one was bought by me second hand and has been refurbished. This one has a perspex front.
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I will still have to make a change to mine as the only access into the cage is via the perspex front which slides across, not too much of an issue as I intend to use it indoors. However I feel a small door in the back to enable moving the bird, food and water in and out without the chance the bird may escape will be better.