1st PC webcam to 2nd PC?

How can I get my study pc webcam to be visible from the pc in my family room?

The study webcam is USB and on the window sill so I can see when the UPS or FEDEX guy delivers a package.

I have a N router wifi modem and I want to watch for a delivery from the back of the house on the pc in the den.

It is possible through my home network to do this?
 
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