Wild solitary bees offer a vital pollination service – but their nutritional needs aren’t understood

As I walk around the supermarket, I pick up vegetables for tomorrow’s dinner, eggs and bread for tonight and some sweet treats for the week. By choosing a range of different food types, I’ll eat a wide variety of nutrients. But what if bread was the only option available? And another shop just sold a different type of loaf? Or only oranges? This may sound far-fetched, but for bees – insects that depend on pollen and nectar for their nutrition – that’s the equivalent of feeding from a large field of just one type of plant. Some bees feed on a wide range of plants. Others, including some of the UK’s 200 wild solitary bee species are spec......

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