• The age of the oldest wild common kestrels, determined by ringing, reaches 16 years.

Eurasian kestrels experience several developmental stages, beginning with an embryonic stage where the embryo develops inside an egg. The young, called fledglings, remain in the nest and are fed by their parents for a period lasting from four weeks to one month and one week. The species reaches sexual maturity at an age ranging from nine months and one week to one year and three months. An adult bird is capable of reproduction and can remain in this stage for a duration of one to twenty years. The typical lifespan of the species is from ten to fifteen years, although the maximum recorded lifespan is twenty-three years and ten months; the theoretical lifespan ranges from three years and six months to twenty-four years and one month.