The wettest April in more than a century has caused problems for UK butterflies, bees and other bugs. Conservation charities, Butterfly Conservation and Buglife, said the weather was likely to limit some species' opportunities to forage. If the unfavourable conditions continue, they could lead to population crashes. Experts are particularly concerned about honeybees, which will not forage in the cold and could run out of food. But some of the country's invertebrate population, such as snails and slugs, are likely to benefit from the deluge.