Searching in Campbell Valley Regional Park
I plan to start searching specifically in Campbell Valley park since it seems to be suitable habitat and be right in the middle of all existing confirmed sightings. It might be fruitful to search specifically near the Langley or Custer sightings in case there's an established nest at either location, since there's only a limited daily range that workers would fly.
I don't have any research links on daily range of V. mandarinia, but I see that V. velutina has been found to range about 1km daily from the nest.
Checking likely habitat that is less densely populated seems like a strategy to bring in more useful information.
