California Naturalist
California Naturalist
California Naturalist
University of California
California Naturalist

Northern CA PPSR Projects 1

Welcome to our ongoing effort to catalog citizen science and other public participation in scientific research (PPSR) projects for UC California Naturalists and other citizen scientists.  We invite you to browse the listed projects or enter key words (like birds, youth, invasive, coast, Alameda, etc.) in the search box above to find projects in your area. It's a great way to stay involved and keep developing your skills as a natural scientist!

A vast majority of the information in the database was gathered from project websites and may be out of date. We encourage you to contact projects directly to get involved and learn about most recent opportunities. If you work with a listed project and would like to add to, update, or correct the information we have, please email Also, please consider filling out the "PPSR perspectives" survey. Click here to access the survey, which will help guide this project in the coming year.

If you know of a project not on our list, please go to the "tell us about a project" link on the left so we can list the project here. Thanks for your help!

Special thanks goes to the National Science Foundation Informal Science Education program and the Stephen J. Bechtel, Jr. Foundation for supporting this database of projects.

Tricolored Blackbird Portal & Triennial Statewide Survey

Organization Name
UC Davis Information Center for the Environment (ICE)
Organization Website
US Fish and Wildlife Service; California Information Node, National Biological Information Infrastructure; Audubon California; Central Valley Bird Club
Contact Name
Contact Email
Contact Phone
Other Contact Information
Project Purpose (taken from project materials)

Monitor trends in the distribution and abundance of tricolored blackbirds. The statewide survey provides current, reliable information on the numbers and distribution of tricolored blackbirds throughout California and a means to document trends in the population over time. The survey complements more intensive field efforts that provide insights into the factors causing observed population increases or declines.

Participant Activities

Participants work independent or in groups to visit tricolor sites and document both presence and absence, along with an estimate of the number of tricolors and characteristics of occupied sites. The statewide survey occurs every 3 years. The observation portal is accessible and may be used by partner organizations more frequently.

Data Entry
  • Website
Other Participant Activities
System Studied
  • Birds
Geographic Scope
All (see 'geographic scope')
Tricolor blackbird colony sites through California
Location - Map
Time Commitment
  • Other (see Other Information below)
Volunteer Qualifications
Volunteer Training

Many resources are available on the project website that teach participants about tricolored blackbirds and the specifics of monitoring (protocols, locations, etc.)

Cost to Participant
How will the findings be used?

Reports, recommendations, and publications produced using the data are accessible on the project website, and data is publicly accessible

Other Information

The statewide survey typically occurs in mid-to-late April. the last triennial survey took place in 2011.

last update:

If you work with this project and would like to add to or update the information below, please email

If you know of a project not on our list, please go to the "tell us about a project" link on the left so we can list the project here. Thanks for your help!

This database is focused on projects in California focused on the environment. For opportunities outside California, as well as national projects that don't have a California-specific components, check

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