Illustrated Bird Guide (Europe)
Cavity-nesting birds can be very choosy when it comes to selecting a nesting space, and one of the key features they evaluate is the size of the entry. Before choosing which entry guard to place on your Nester pod, refer to the list below to see the preferred entry size of some of Europe's more common cavity nesting species.
Need help putting everything together? Here's our Mounting & Assembly Guide
28mm Entry Guard

Blue Tit

Coal Tit

Crested Tit

Great Tit

Marsh Tit

Willow Tit
32mm Entry Guard

Great Tit

Pied Flycatcher

Collared Flycatcher

Common Redstart

Wryneck

Nuthatch
38mm Entry Guard

House Sparrow

Tree Sparrow
43mm Entry Guard

Starling