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.
This is called a 'brood patch'. Different birds sit on their eggs for different lengths of time. Bigger birds lay bigger eggs which take longer to hatch. Blue tits incubate their eggs for two weeks but swans sit on theirs for nearly six weeks!Most birds lay one egg a day until the eggs are all laid. Some birds lay up to 15 eggs but others lay only one.But the parent birds do not start to incubate the eggs until they are all laid.In some birds, only the mother sits on the eggs.ost birds lay one egg a day until the eggs are all laid. Some birds lay up to 15 eggs but others lay only one. But the parent birds do not start to incubate the eggs until they are all laid. In some birds, only the mother sits on the eggs.