Long-term impact of changes in sheep Ovis aries densities on the breeding output of the hen harrier Circus cyaneus

Agriculture & Biology

• Circus cyaneus 100%
• hens 56%
• sheep 42%
• breeding 37%
• Scotland 12%
• habitats 9%
• grazing 9%
• foraging 8%
• predators 8%
• Microtus arvalis 7%
• voles 6%
• small mammals 6%
• prey species 6%
• land use 5%
• highlands 5%
• grasslands 4%
• weather 4%
• case studies 4%
• livestock 4%
• rain 4%
• vertebrates 4%
• birds 3%
• synthesis 3%
• temperature 2%

Earth & Environmental Sciences

• sheep 66%
• breeding 61%
• stocking 12%
• habitat 10%
• predator 9%
• grazing pressure 7%
• small mammal 6%
• weather condition 5%
• livestock 5%
• vertebrate 5%
• grazing 4%
• bird 4%
• grassland 4%
• land use 3%
• rainfall 3%
• effect 2%
• temperature 2%