The largest survey of pollinator abundance in Wales has found that woodland and hedgerow creation can play a crucial role in action to reverse declines in insects that are essential for crop yield and other wildlife. Until now, there have been surprisingly limited scientific data about pollinators in Wales when compared to the rest of the UK. However, a major new study of hundreds of different sites has revealed the types of habitats where pollinating bees, hoverflies and butterflies are most abundant.