Over the last two years, residents of Whatcom County have noticed
hornets attacking paper wasp nests. In 2021, WSDA tracked a hornet and observed
it repeatedly visiting the same paper wasp nest. Each visit lasted five to ten
minutes and the hornet removed paper wasp larvae.
Paper wasps can grow to about ¾ of an inch long and have a
well-defined “wasp waist” that makes them easy to identify. Paper wasps are
typically not aggressive and do not readily attack people, but they can sting
if threatened. They form small colonies and build hanging, open comb nests on
building eaves, frames, abandoned cars, or branches of trees and shrubs. Paper
wasp nests vary in size and are usually gray to brown in color. They are
made up of many exposed cells that are less than an inch deep. Nests typically
range from the size of a quarter to as wide as a coffee can lid, but can be
Although we invite anyone in Washington to participate in adopting a paper wasp nest, we are particularly interested in observations from Whatcom, Skagit, Island, San Juan, Snohomish, King, Jefferson, and Clallam counties.
Starting in June, locate nests that you have access to and
can monitor through October. Log the nest locations using the Adopt A Paper
Wasp Registration Form. After submission, you’ll receive an email confirmation
which will include a unique Site ID assigned to your nest location. You will
need to save this Site ID to use during weekly check-ins. (Please do not register any sites before June 1.) Click
here to access the registration form.
After monitoring you will need to report each of your
observations on the Paper Wasp Nest Check-in form. You will also need your Site
ID that was received in a confirmation email. Click
here to report and access the Check-in form.
WSDA is dedicated to
working with the public and to providing information on Asian giant hornets.
Join the Asian giant hornet Facebook
Join the Pest
Program email listserv.