08/09/2026
The best Curlew growth rate comes from farmland next to a grouse moor.
A new BTO research report modelled that scenario on Baines et al.'s 2023 study of land bordering ground used for grouse shooting, under intensive predator control.
It returned 18.3% population growth a year, the strongest figure anywhere in the report. Reduce the predator control, or plant trees on it, and growth falls to 8%.
Calladine and colleagues put 36% of Britain's breeding Curlews on ground that overlaps grouse moors.
The report also asked 28 recovery projects across the UK and western Europe what their work had achieved. Fencing and predator control increased nest success, often by a very large margin. Chick survival barely changed. As many projects recorded more chick predation after intervention as recorded less.
So the best Curlew ground in the model is ground where the predator control is already being paid for by local farmers or shoots.
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