CLOSED: Question about pregnant bird who abandoned nest

This thread isn't about bird identification, but a question about nest habits.

Every year, sparrows build a nest in one of the hanging containers on my front porch. Since I don't know how long a sparrow lives, I have no idea if it's the same mama bird or if her one of her female offspring comes back, or if they just spread the word in sparrowland that it's a cool and sheltered place to have babies.

This year, as always, nest building began mid May, and there should be eggs, even hatchlings, by now. But not this year. So I am wondering why she abandoned her nest.

Toward the end of May, we had a frost warning one night, and I brought all the plants inside. One night only. Could that have been the night she was going to lay her eggs? :(

I wonder what would have happened to her if she had no place to go that night. Does anyone know?

Birds lay one egg daily until they have a clutch .. Then they start the incubation process..Usually lay early in the day..

Larkie

Thanks. If time was up for her to lay that first egg early in the morning (before I put the plants back outside), I suppose she was forced to find another spot.