Colony Locations (Public)

This table contains publicly-accessible records of locations of tricolored blackbird colonies and aggregations. These may have occurred on either public or private property.

If you have not obtained rights of access to locations on private property, please view colonies from public (e.g., county) roads.

Fields provided are county, accepted name of location, whether the location is a known colony location, geographic coordinates, the confidence in the location coordinates, and the primary and secondary substrates types (the types of vegetation present).

Download Data: Excel Spreadsheet (.xls), Comma Separated Values (.csv)

County Name Colony Latitude Longitude Location Confidence Primary Substrate Secondary Substrate
Kern Kern River Bridge/I-5 Yes 35.300600 -119.270200 Certain stinging nettle (Urtica dioica) other (note in Comments)
Kern Kern River Island Yes 35.344037 -119.155270 Certain stinging nettle (Urtica dioica)
Kern Kern River No. 1 Yes 35.309300 -119.245000 Certain stinging nettle (Urtica dioica) mesquite (Prosopis spp.)
Kern Kern River No. 2 Yes 35.308000 -119.245000 Certain stinging nettle (Urtica dioica) mesquite (Prosopis spp.)
Kern Kern River Parkway Yes 35.329900 -119.189600 Certain
Kern Kern River Preserve - Prince Pond Yes 35.668471 -118.327131 Certain cattails (Typha spp.) stinging nettle (Urtica dioica)
Kern Kern River Preserve HQ Yes 35.664654 -118.304724 Certain stinging nettle (Urtica dioica) mallow (Malva sp.)
Kern Kern Rock Company: Wheeler Ridge Yes 35.009100 -118.962100 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Kern Kern Water Bank M7-1 Yes 35.309400 -119.280000 Certain stinging nettle (Urtica dioica) mesquite (Prosopis spp.)
Kern Kern Water Bank No. 8 Yes 35.305000 -119.278330 Certain mesquite (Prosopis spp.) stinging nettle (Urtica dioica)
Kern Kern Water Bank No. 9 Yes 35.314080 -119.237500 Certain mesquite (Prosopis spp.) stinging nettle (Urtica dioica)
Merced Kesterson NWR Yes 37.258700 -120.892000 Certain other (note in Comments)
Merced Kesterson NWR- Gallo Ponds Yes 37.269900 -120.923600 Certain cattails (Typha spp.)
Sacramento Kiefer Boulevard Yes 38.513100 -121.194000 Certain Himalayan blackberry (Rubus armeniacus) other (note in Comments)
Sacramento Kilgore Road at International Drive Yes 38.583200 -121.270700 Certain other (note in Comments)
San Bernardino Kimball Avenue Yes 33.966900 -117.633000 Certain bulrush or tule (Schoenoplectus spp.) cattails (Typha spp.)
San Luis Obispo Kirschenmann Rd Yes 34.933362 -119.601223 Certain stinging nettle (Urtica dioica)
Sacramento Koessler Dairy Yes 38.280510 -121.311060 Certain Himalayan blackberry (Rubus armeniacus)
San Joaquin Koster Road Quarry Yes 37.614413 -121.327958 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Kern KVLI radio tower Yes 35.632500 -118.477220 Certain stinging nettle (Urtica dioica)
Stanislaus La Grange Yes 37.661000 -120.455000 Uncertain cattails (Typha spp.)
Orange Laguna Beach Yes 33.541000 -117.759000 Uncertain cattails (Typha spp.)
Sacramento Laguna Creek at Clay Station Road Yes 38.354700 -121.179500 Certain willows (Salix spp.)
Sacramento Laguna Creek at Eagles Nest Road Yes 38.483900 -121.270000 Certain other (note in Comments) Himalayan blackberry (Rubus armeniacus)
Sacramento Laguna Creek at Franklin Boulevard Yes 38.441890 -121.435620 Certain Himalayan blackberry (Rubus armeniacus)
Orange Laguna Niguel Regional Park-Central Island Yes 33.546420 -117.704740 Certain cattails (Typha spp.) Giant reed (Arundo donax)
Monterey Laguna Seca Yes 36.571400 -121.768000 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Monterey Laguna Seca Raceway Yes 36.583800 -121.755670 Certain cattails (Typha spp.)
Santa Clara Lake Cunningham Park Yes 37.337100 -121.815600 Certain bulrush or tule (Schoenoplectus spp.)
Riverside Lake Hemet Yes 33.667559 -116.669902 Certain bulrush or tule (Schoenoplectus spp.)
San Diego Lake Henshaw Northwest Yes 33.257900 -116.746170 Certain other (note in Comments) willows (Salix spp.)
Kern Lake Isabella Yes 35.665100 -118.347500 Certain cattails (Typha spp.) stinging nettle (Urtica dioica)
Kern Lake Jean Yes 35.125260 -118.417400 Certain willows (Salix spp.)
San Diego Lake Murray Yes 32.785873 -117.041869 Certain cattails (Typha spp.)
Riverside Lake Norconian Yes 33.922000 -117.573000 Certain bulrush or tule (Schoenoplectus spp.)
Ventura Lake Sherwood Yes 34.137500 -118.861100 Certain cattails (Typha spp.) willows (Salix spp.)
Riverside Lake Skinner Yes 33.582877 -117.045078 Certain bulrush or tule (Schoenoplectus spp.)
Tulare Lake Success Yes 36.101000 -118.911700 Certain stinging nettle (Urtica dioica)
Riverside Lake Vista 1 Yes 33.496000 -116.831000 Certain wild rose stinging nettle (Urtica dioica)
Lake Lakeport Yes 39.043400 -122.923800 Uncertain cattails (Typha spp.)
Riverside Lakeview Mountains Yes 33.821371 -117.049370 Certain mallow (Malva sp.) stinging nettle (Urtica dioica)
Sonoma Lakeville Road Yes 38.148500 -122.490800 Certain bulrush or tule (Schoenoplectus spp.)
Crook LaMonta Marsh Yes 44.369700 -120.886300 Certain cattails (Typha spp.)
Los Angeles Landfill/Aqueduct Site 1 Yes 34.575238 -118.180468 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Los Angeles Landfill/Aqueduct Site 2 Yes 34.571203 -118.168250 Certain cattails (Typha spp.)
Santa Cruz Last Chance Pond Yes 37.088460 -122.258700 Certain bulrush or tule (Schoenoplectus spp.) other (note in Comments)
Sacramento Latrobe Road Yes 38.517700 -121.119500 Certain Himalayan blackberry (Rubus armeniacus)
Alameda Laughlin Road Yes 37.750256 -121.708646 Certain cattails (Typha spp.)
Alameda Laughlin Road at Lake Road Yes 37.734020 -121.713900 Certain other (note in Comments) other (note in Comments)
Contra Costa Lawrence Road Pond Yes 37.784300 -121.902500 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
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