Do Cities Need More Beehives?
Over the past fifteen years, beehives have appeared on office roofs, hotel terraces and school gardens in many large cities. The trend is usually presented as good news for nature, and companies are often keen to mention their hives in annual reports. I believe this enthusiasm, though well meant, rests on a misunderstanding of what pollinators actually need.
The honeybee is a managed, domesticated animal, much closer to livestock than to wildlife. It is not in danger of disappearing: beekeepers can replace lost colonies by dividing healthy ones. The insects in decline in many regions are wild bees, hoverflies and other wild pollinators, and these are the species that most deserve our attention.
Supporters of urban hives argue that cities, with their parks, gardens and street trees, offer a richer variety of flowers than intensively farmed countryside. This is a fair point, and some studies have found urban honey to contain pollen from a remarkable range of plants. However, flowers are a limited resource. A single strong colony may contain tens of thousands of foraging bees, and where hives are densely concentrated, honeybees may take nectar and pollen that wild species depend on. Some ecologists also worry that crowded hives could spread disease to wild bees, although the evidence on this is still incomplete.
None of this means that urban beekeeping should be banned. Keeping bees is a valuable educational activity, and well-trained beekeepers can teach the public a great deal about insects. The problem lies in treating the number of hives as a measure of environmental benefit. A rooftop hive is easy to photograph; a strip of unmown grass is not, yet the latter almost certainly does more for wild pollinators.
What cities need, in my view, is a shift from adding bees to adding flowers. Councils could plant native species in parks and along roads, mow less often, and leave patches of bare ground where many solitary bees nest. Where new hives are proposed, their number should be matched to the food available nearby. These measures cost little, and they benefit honeybees too.