My curiousity is definately sparked on this one. First of all, "2ft of soil"? 12ft burrows? Damn, sounds like a really cool set up ). Maybe the closest to their natural enviroment yet.

Since there's no down side to this, I'm going to take a stab at it. IMO, (and this stems from all the Discovery, nature, and science channels) I'm guessing that it could be one of two things (or both). As they are constantly "remodeling" their burrows, and digging around, the tunnels are going to constrict a bit with the loose dirt. Even in our infinate wisdom, when mining in caves, we had to remove the rock that we broke up. The large pieces are the esiest and and most obvious things to go with as I'm not sure how they would move fine dirt (the uros). The other opinion, since you say that once the rocks are removed, there's more the next day, makes me think that they are, to some extent, maybe monitoring the size of their burrow opening...? I now many spiders that burrow, customize their doorway to suit their needs.

I don't know for sure, but it's definately a new area. I'd say, click on that pop-up for the "home security" camera that's triggered by motion and set up the infared. Don't know if that'd tell you why, but sure as heck would be cool to see.



-Jim
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2.1 - Rocky, Runako, and RoxyIII

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