Eggs hatch 13-16 days after being laid. The young are altricial. Fledglings leave the nest 15-20 days after hatching. Several studies have revealed that some young will stay around the nest to help with other nesting duties. Both parents cooperate in raising the young, feeding them a diet consisting of insects.
Fledglings are grayish in color.
The blue color becomes much more prominent and the speckles on their breast diappear as they mature. This species is very social, at times gathering in flocks of 100 hundred or more. These birds are partially migratory, leaving their northern homes when food sources become scarce or when temperatures and other environmental conditions are not suitable. When feeding, a bluebird will often fly from his perch to the ground to catch an insect or other source of food. Flying speeds of this bird have been determined at 17 m.p.h.