There's also the possibility they're either not quite done, and/or are waiting until they're planning on reopening to add more stuff that would have to withstand elements. It's hard to tell if the other animatronics are not present for refurb, though.
Also, I feel like I can faintly see another prop right where the Gyrosphere is, but it's hard to tell what it is. Part of me wants to say it's a better looking dead Pteranadon?
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