I found a question about ants sleeping - Do ants or other insects sleep, and if so why?, but I don't think it really answers my question.

For the question, I'm mostly referring to web-making spiders, say orb webs.

So a spider set up shop inside my house late last year. It built a web high up in the corner and started catching moths and stuff. I know it's been there and it's the same spider because I've watched it grow.

But when the spider isn't catching something, eating or building a web - what is it doing? Just waiting for web vibration?

I imagine if it was outside it would be hiding or trying not to be prey. I also imagine it might be looking for a mate. What I can't figure out is what this spider does all day.

Why would it build a web where no other spiders are and then stay there for months doing nothing?

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    $\begingroup$ It is meditating. But the one outside my back door is plotting just when and how to scare me to death by jumping on my head. I can tell by looking deeply into the largest of its four pairs of eyes. Where is @Roland when we need them? $\endgroup$ Apr 24 '17 at 20:19
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    $\begingroup$ Why don't you think it could be hiding or trying not to be prey indoors? I doubt the spider is quite aware of the barriers your house provides to entry of certain predators, or that it has chosen a place that is less likely to be frequented by its conspecifics. I think what you are describing: building a web and waiting, is essentially the activity of "hunting" for a spider. $\endgroup$
    – Bryan Krause
    Apr 24 '17 at 20:30
  • $\begingroup$ @BryanKrause - Indeed, house spiders are just that: house spiders. $\endgroup$ Apr 24 '17 at 20:37
  • $\begingroup$ @anongoodnurse I thought house spiders didn't have a long enough lifespan for the amount of time it has been here. $\endgroup$ Apr 24 '17 at 20:55
  • $\begingroup$ They can live about two years if they have food. And they can survive on really tiny things, like drain flies. $\endgroup$ Apr 24 '17 at 21:05

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