Willow Tit Nest Boxes

The reasons for the serious decline of the Willow Tit in the UK is constrained by a lack of understanding of the species’ ecology, which is partly due to the difficulty of persuading Willow Tits to use nestboxes.

This design of  nestbox has been shown to work in some study area. Nest success from nests in boxes that reach the egg stage is very high, probably much higher than those in natural cavities.

See this article https://britishbirds.co.uk/article/nestboxes-fieldcraft-monitoring-willow-tits/