Illegal Nest Part 2

There are three eggs in that illegal nest that was installed on my property recently, which means that there must be at least two birds living there. It isn't big enough for two birds, and what they expect to do with those eggs once they hatch, I don't even want to imagine since there surely isn't room for them in there. How in the world can I make those birds pack their eggs and get into a birdhouse immediately? That nest is at best a single bird dwelling, and I'm sure isn't up to code! What if the code inspectors come around? I will be held accountable as the property owner!