Everyone here is missing the obvious thing: The bird nest was relocated before the birds got settled in, before they laid their eggs. So, really, the birds were probably a little confused but then adapted and found a new place to build their home.
What this discussion is missing is the use of a deflated beach ball stuffed into the rafters as a stopper?! What about the beach ball and its purpose in life? Wasn't it MADE to be, well, a ball at the beach? What will happen to it, come summer, when the family leaves for lazy days at the oceanfront, but the beach ball is still stuck up in the rafters, as a "No Occupancy" sign for the local birds?
That beach ball is being denied its inherent right to float through salt-flavored air, whizzing over sand and dipping into the waves crashing on the shore.
It's a sad, sad thing.
Hahaha, that was funny!
Thanks for the upvote, @brian.rrr. I appreciate it!