For memorial services, doves are released as a final closure; especially where there has been an accident or sudden death and especially when young people are involved. Mentally, a dove release helps people to understand that the deceased has gone on to a better place.
For graveside funeral services, releasing a single pure white dove symbolizes the spirit returning home. When the dove is released by a family member it can help them to bring closure to their service and their loss.
A flock of pure white doves can be released following the one dove release upon request.