Blue-and-yellow macaws form monogamous pairs that mate for life.
Mating System: monogamous
Blue-and-yellow macaws reach sexual maturity at 3 to 4 years of age. Their breeding season is during the first half of the year and they breed about every 1 to 2 years. Nests are found high up in tall trees, mainly in cavities already made by other animals. Females lay 2 to 3 eggs and incubate them for 24 to 28 days, after which the young hatch blind and featherless. After 10 days the young begin to develop feathers. Within 3 months fledglings become independent.
Breeding interval: Blue-and-yellow macaws breed every 1 to 2 years.
Breeding season: Blue-and-yellow macaws breed from January through July.
Range eggs per season: 2 to 3.
Range time to hatching: 24 to 28 days.
Range time to independence: 10 (low) days.
Range age at sexual or reproductive maturity (female): 3 to 4 years.
Range age at sexual or reproductive maturity (male): 3 to 4 years.
Key Reproductive Features: seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate)
Blue-and-yellow macaw males and females care for their young through providing for them and protecting them. During their first week after hatching, only the female will feed the young through regurgitation, afterwards the male will also feed the young. Both parents show extreme aggression towards intruders in order to protect their young.
Parental Investment: altricial ; male parental care ; female parental care ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Male, Female); pre-weaning/fledging (Provisioning: Male, Female, Protecting: Male, Female); pre-independence (Provisioning: Male, Female, Protecting: Male, Female)
- Juniper, T. 1998. A Guide to Parrots of the World. New Haven: Yale University Press.