The average life span of a Cassowary in the wild is thought to be around 35- 40 years, but in captivity they have been known to live to up to 60 years. From May to November, pairs of cassowaries court briefly, mate and then separate. Females lay between 3 to 5 large, olive-green eggs, generally between June & October. Eggs are incubated by the male for about 50 days, who alone guards the eggs & raises the chicks. Juveniles begin to fend for themselves from about 8 to 18 months of age, when they are chased away by the male.