The eastern screech-owl’s typical lifespan ranges from fifteen years, seven months to twenty-five years, eleven months, with a maximum recorded lifespan of twenty years, nine months, and a theoretical lifespan between fifteen years, five months and nineteen years, ten months. Sexual maturity is reached at ages ranging from nine months and one week to one year and three months. The "Embryo" stage involves the developing embryo inside an egg, followed by the "Nestling" stage where the young are in a nest and fed by their parents for a period lasting from two weeks to one month and one week. The “Young after Rapid Growth” stage sees the young learning to fly and hunt, a process that lasts from one month and one week to one year. The "Adult" stage, during which the species can reproduce, extends from one to eleven years.