More than one-quarter of the bumble bee species in northeastern North America have either vanished or are in serious decline. Wild bees pollinate wildflowers and most crops in the Northeast, including blueberries, tomatoes, squash and apples. Harmful parasites accidentally imported from Europe and a class of pesticides toxic to bees most likely account for the bumble bee declines. Learn more about some of the bumble bees that concern us most and how you can help restore our pollinators.