Since you know about birds...
I have a couple wrens trying hard to build a nest under a metal awning only to have the wind take it away while building it. I’ve watched over 12 attempts in a span of 3 days and they still keep trying.
The female is pretty plump and so what will happen to her if she can’t lay her eggs?
They tend to have the nest built before the mating happens. The male usually starts that process sometimes before even finding a mate. If a female has one already in the process and is unable to lay it, it’s because of being egg bound, but that’s a different situation.