Eleven Cuckoos with backpacks are on a mission to save their kind

A Cuckoo wearing a backpack whilst flying past the camera
Backpack wearing Cuckoo by Neil Calbrade

The British Trust for Ornithology (BTO) have just finished fitting Cuckoos from different parts of the UK with high-tech backpacks to help fill gaps in what we know about how they fare over their annual cycle.

The sound of the Cuckoo for many of us is the sound of summer but it is a sound that we are hearing less and less; the UK breeding population…