Yellowjacket

Natural Habitat

Yellowjackets are highly adaptable and can be found in various habitats, including forests, grasslands, urban areas, and suburban environments. Their nests can be subterranean (in old rodent burrows), in tree cavities, in wall voids of buildings, or in dense bushes/shrubs. The image provided shows a nest constructed in some kind of concrete or stucco crevice, likely in or near a human structure.

Diet & Feeding

Yellowjackets are omnivorous, consuming a variety of foods. Adults primarily feed on sugars from nectar, fruit, and human foods (especially sweets). Larvae require protein, so adults hunt other insects, spiders, carrion, and scavenge for meat scraps to feed to the developing young.

Behavior Patterns

Yellowjackets are social insects that live in colonies, often numbering thousands of individuals. They are active during the day, foraging for food and building their nests. Defensive of their nests, they can sting repeatedly if threatened. They are known for 'scouting' for food sources and will recruit others to abundant finds. The colony typically dies off in colder months, with only the queen overwintering to start a new colony in the spring.

Risks & Benefits

Risks: Yellowjackets are aggressive and can deliver painful stings, especially when their nest is disturbed. Multiple stings can be dangerous, and for individuals allergic to venom, a single sting can cause a severe anaphylactic reaction. They can also become pests around outdoor eating areas. Benefits: Yellowjackets act as predators of many agricultural and garden pests, contributing to natural pest control. They also play a minor role in pollination as they visit flowers for nectar.

Identified on: 6/26/2025