First you get all your stuff together, stuff like saw, marker, wood and square, something  for drilling holes and the all important
assorted screws and nails.  Next the fun part, it gets all torn up then measure, cut and reassembly.  What you get is a strange bird house (thumbnail).  But wait, a feeding station and housing  don’t go together, so how about putting a camera inside, then have it placed in a tree?  Turn the camera to automatic, and go indoors for lunch.  Most of the time you get nothing but garbage, but once in a while, you hit the jackpot.