Why did President Truman ask Congress to give financial aid to Greece and Turkey?
Actually checking the nest for the number of eggs while a finch is sitting on them can cause nest abandonment. After mating, a female finch can store sperm in her reproductive tract for up to 16 days. Female finches generally lay an egg every day, commencing between five and seven days after breeding. The average clutch consists of four to six eggs, although the overall number varies from three to eight.
If your finches are laying clutch after clutch and abandoning the nest or the eggs just aren't hatching  remove the nest and give them a break for at least 2 months. If your finches feel open and exposed they may not nest properly  give them privacy. Illness: With all finches illness isn't usually easy to detect.