If you erect bluebird boxes, more than likely you have wondered if bluebirds return to nest in the same nest box they used the year before. 

       As it turns out, banding studies demonstrate anywhere from 26-44% of the bluebirds that nested in box last year will return to nest there this year. 

       One factor that determines if bluebirds use the same box from year to year is whether their nesting efforts the previous year were successful.  As you might imagine, they are more likely to use the same box if they successfully raised young in that box the previous breeding season.