"Eastern Bluebirds Nest Cleaning
Eastern Bluebirds clean out their nest before nesting for the new season to ensure a safe and healthy environment for their eggs and chicks. Cleaning the nest box removes any parasites or debris that could harm the new brood. It is recommended to clean the box after each clutch and before the next breeding season begins.
This practice helps prevent the spread of parasites that could have been brought in by adult birds and could affect the nestlings. Additionally, maintaining a clean nest box can encourage bluebirds to return and nest in the same location."
This was an Ai response to my inquiry about "Nest Cleaning."