Bluebirds typically fledge (leave the nest) between 16 and 22 days after hatching, with the average around 19 days. Most young bluebirds leave the nest between days 18 and 22, and they do not leave before day 16 unless forced by circumstances. The fledging process often occurs in the morning, about six hours after sunrise or before noon, to give fledglings enough time to find safe places to hide. The timing of fledging can vary somewhat based on the time of year, with spring broods fledging slightly later than summer broods. The first flight of fledglings tends to be awkward and short, with parents guiding and feeding them even after they leave the nest. In summary:

• Bluebird nestlings leave the nest mostly between 16 to 22 days after hatching.
• Average fledging age is about 19 days.
• Fledging usually happens in the morning.
• Parents continue feeding fledglings for some time after they leave the nest.