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Have you tried him on a free range? As soon as he sees me me, Bob wants out and either sits with me or goes to his free range. It's nothing special, just fake fines between a large plant and a climbing frame made from collected oak branches. Believe it or not, he tells me when he wants to go for a warm up back in his viv by going to one spot and pawing the air.
You may have a similar nutter to Bob, depending on his reaction to you when you open the viv, or, he's trying to get away from something.
I know there's a lot here but priority number one, make it safe ASAP. Then sort heat lamps and temps.
Happy to answer any other Qs you may have and hopefully
@Brodybreaux25 will furnish you with the pretty picture versions of advice.