Within-season nest box fidelity in eastern bluebirds Sialia sialis using woodcrete versus wooden nest boxes depends on the quality of alternative cavities, Davidson, North Carolina, USA
This study is summarised as evidence for the following.
Clean nest boxes to increase occupancy or reproductive successAction Link
Provide artificial nesting sites for songbirdsAction Link
Clean nest boxes to increase occupancy or reproductive success
A replicated paired study in 1996-7 in North Carolina, USA (Stanback & Rockwell 2003), found that eastern bluebirds Sialia sialis preferentially used clean woodcrete nest boxes over woodcrete boxes that had already been used once in the year, with 71% of 45 pairs switching boxes. However, 73% of 26 pairs did not switch from a soiled woodcrete box to a clean wooden box. The preference for different box types is discussed in detail in ‘Provide artificial nest sites’.
Provide artificial nesting sites for songbirds
A replicated paired study in 1996-7in North Carolina, USA (Stanback & Rockwell 2003), found that eastern bluebirds Sialia sialis showed an overwhelming preference for nest boxes made from woodcrete over those made from wood (90% of 102 pairs picking woodcrete boxes). When given the choice of re-using a soiled woodcrete box or switching to a clean wooden box, 73% of 26 pairs remained in the woodcrete box. The effect of cleaning boxes is discussed in more detail in ‘Clean nest boxes to increase occupancy or reproductive success’. Approximately 100 pairs of boxes were mounted in pairs, on poles 1 m apart, one of woodcrete and one of wood.