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Pierce County Biodiversity Network

Nisqually Delta BMA (10E)


A 10-square mile area around the City of Roy is part of the Nisqually Delta BMA. It's designator is 10E or Roy.

The Nisqually Delta is the third BMA where a bioblitz was conducted by the Pierce County Biodiversity Alliance (PCBA).

There are 467 parcels within 10E and 10 landowners with 27 total parcels allows the bioblitz experts and citizen scientists to inventory their lands. The sites are scattered across a few miles, and divided into three general survey areas.

Roy Bioblitz Results (2009)

  • May 15-16, 2009. Roy Rodeo Hall was "Science Central" where all the scientists, staff, and volunteers gathered.
  • Over 50 scientists, taxa experts, volunteers, land owners and news media participated in the 24-hour inventory of birds, mammals, amphibians, reptiles, insects, and plants.

    enlarge map


    Final results
    Predicted vs Observed (pdf)
    Spider Report

    final tally


    Album of Roy BioBlitz Field Trip by Rod Crawford
    Selected photos from the annual Pierce County BioBlitz (24-hour biological recording marathon), now operated by the Pierce County Biodiversity Alliance.

    Photos contributed by Northwest Trek and Volunteers

    ant mound
    Ant mound California Quail Mallard ducklings
    Serviceberry (Amelanchier spp.) Bat Student identifying insects
    Volunteers   Trillium
  • Resources

    Washington Native Plant Society

    Washington State Field Guide - Burke Museum