how long do bird eggs take to hatch.
Full Answer. To know when a bird egg is going to hatch, you must know the species of bird to determine the incubation period. For example, the incubation period for dove eggs is 14 to 16 days while the incubation period for bald eagles is much longer at 35 days, and it takes up to 80 days for royal albatross eggs to hatch. Larger birds generally have longer incubation periods.