David Baines and Michael Richardson Hen harriers on a Scottish grouse moor: multiple factors predict breeding density and productivity Journal of Applied Ecology 50
We consider this study to be the first that quantifies how control of generalist predators as part of grouse moor management can benefit harrier productivity. This adds to the importance of finding ways to ensure that grouse moors are managed for harriers, but are still economically viable. If techniques can be devised and put in place to reduce the impact of harriers on grouse, then the control of generalist predators may be viewed as a more acceptable component of conservation management for ground-nesting birds.
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