I know that when I take my pair out, the larger the open space, the more flighty they become. I finally figured out it was a fear response. They are fine in the bathroom, ok in the lizard room, which is a small bedroom but if in the living room or in an outdoor folding exercise pen, they are very flighty, very nervous and while not exactly aggressive, I watch myself with them a little more closely as they seem somewhat fearful.
It sounds like the change of environment was sudden and very unfamiliar. How are they inside? Is the aggressive one less so? How about when you talk to them while in their enclosure? The other thing you may want to pay attention to is how hot they are getting on the patio. Overly warm temperatures result in more active and possibly aggressive behavior. However, my first guess is fear. Make sure that your kids have a very secure, dark, cool hide when on the patio. With lizards, "out of site, out of mind" is the rule. What I do't see can't scare me or "what I can't see, can't see me".
T. merianea, Gordo
T. rufescens, Eva
V. Ionedes, Nyuse Kinabo, (Swahili - Black Gift from God)
Standard Poodles - Millee & Sonny Boy
A bunch of colubrids and tarantulas
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