Within-season nest box fidelity in eastern bluebirds Sialia sialis near Davidson, North Carolina, USA
This study is summarised as evidence for the following.
Clean nest boxes to increase occupancy or reproductive successAction Link
Clean nest boxes to increase occupancy or reproductive success
A replicated study in North Carolina, USA (Stanback & Dervan 2001), found that eastern bluebirds Sialis sialis preferentially selected cleaned nest boxes over uncleaned boxes, with 71% of 45 pairs switching from a previously-used box to an unused one. However, if successful nest boxes were cleaned then 75% of 32 pairs remained in the same box, rather than moving to an identical, cleaned box.