Large vultures and condors lay only one egg per clutch. The eggs are laid over several days. Small species lay an egg once every two days, while large species lay an egg once every three to five days. Most females incubate the eggs while the male provides food for himself and the female. Both Old and New World vultures tend to share incubation between the male and female.
Incubation usually begins before the clutches are complete.
As a result, the eggs hatch over two or more days. Incubation lasts four to seven weeks according to species. Large species tend to have longer incubation periods than small species. G. Chicks at hatching. The egg tooth is not a true tooth and falls off soon after hatching.