 The female incubates the eggs for 14 or 15 days; after hatching, nestlings are fed and their fecal sacs removed by all group members for 10–13 days, by which time they are fledged.Young birds remain in the family group as helpers for a year or more before moving to another group, usually an adjacent one, or assuming a dominant position in the original group.In this role they feed and care for subsequent broods.