The natural enemy of yellow jackets includes a range of predators, parasites, and environmental factors that prey on them or destroy their nests, with birds, mammals, and other insects being most significant. Birds like bee eaters, swallows, and other insectivorous birds catch yellow jackets in flight and eat them, often removing stinger before eating. Mammals like badgers, bears, raccoons, and skunks raid yellow jacket nests, especially underground nests, digging them up and eating protein-rich larvae and pupae, which destroys colony, making them major natural enemies. Insects like dragonflies catch yellow jackets in flight, robber flies prey on them, praying mantises eat yellow jackets, spiders catch them in webs, and parasitic flies and wasps lay eggs on or in yellow jackets, with larvae feeding on them. Bears are known for destroying nests. Fungi and bacteria infect and kill yellow jackets. Environmental enemies include cold winters that kill colonies, as only fertilized queens overwinter and rest of colony dies with frost, and heavy rain that can destroy nests. For humans, natural enemies are less effective for control near homes, so prevention like covering food, sealing trash, and professional pest control removal are needed. In ecosystem, yellow jackets are also predators of many pest insects, providing beneficial pest control, so they have both predator and prey roles.
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