![](https://nestwatch.org/wp-content/uploads/2017/06/nw-header-blog.png)
![](https://nestwatch.org/wp-content/uploads/2018/11/MOBL_banner_SarahLeroux-125x125.jpg)
Round Versus Slot Entrances: New Study Says “Go Round”
A new study of nest box design suggests that bluebird enthusiasts should choose round entrance holes over “slot-style” nest boxes. Find out why this design decision made a difference to Mountain Bluebirds in British Columbia.