Oh my, there must already be eggs in the nest!
Well, that didn't take long.
I took this photo a couple of days, just a day or two after I took the photos in the previous post of the house finches gathering twigs and dried grass for their nest.
The female house finch is usually sitting in the nest now, but sometimes is away finding sustenance for herself.
Incubation of the eggs, done by the female, takes about 14 days.