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 |
|---|---|---|---|---|---|---|---|
| Sacramento | Florin Road at Florencia Lane | Yes | 38.496300 | -121.354900 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Alameda | Ames and Dalton | Yes | 37.727594 | -121.732668 | Certain | cattails (Typha spp.) | |
| Kings | Racine Avenue at Kettleman City | Yes | 36.007280 | -119.923120 | Certain | cattails (Typha spp.) | |
| Monterey | Skyline Road | Yes | 36.610700 | -121.729370 | Certain | stinging nettle (Urtica dioica) | mustard (Brassica spp.) |
| Tulare | Creighton Ranch | Yes | 36.069444 | -119.452778 | Certain | other (note in Comments) | |
| San Diego | Borrego Springs Country Club | Yes | 33.242900 | -116.357000 | Certain | cattails (Typha spp.) | |
| Humboldt | Highway 101 at Drake Hill Road #1 | Yes | 40.559380 | -124.146530 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Sacramento | Kiefer Boulevard | Yes | 38.513100 | -121.194000 | Certain | Himalayan blackberry (Rubus armeniacus) | other (note in Comments) |
| Santa Cruz | West Struve Slough | Yes | 36.924400 | -121.794300 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Madera | Bates Station Road | Yes | 37.077510 | -119.864170 | Certain | milk thistle (Silybum marianum) | |
| Sacramento | Davis Road at Dillard Road | No | 38.395400 | -121.260900 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Merced | McNamara Road #3 | No | 37.225800 | -120.665600 | Certain | milk thistle (Silybum marianum) | |
| Colusa | Lurline Road | Yes | 39.218124 | -122.062740 | Certain | other (note in Comments) | |
| Sacramento | Highway 16 at Excelsior Road | No | 38.518300 | -121.290500 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| San Benito | Idria Road | No | 36.516700 | -120.833100 | Certain | ||
| San Bernardino | Mojave River at Victorville | Yes | 34.569270 | -117.317419 | Certain | cattails (Typha spp.) | willows (Salix spp.) |
| Sacramento | Deer Creek at Scott Road | Yes | 38.570900 | -121.118900 | Certain | cattails (Typha spp.) | |
| San Joaquin | Liberty Road at Dry Creek Road | No | 38.237310 | -121.134630 | Certain | ||
| San Diego | Dameron Valley | Yes | 33.421800 | -116.829100 | Certain | ||
| Monterey | Bradley Road 2 | Yes | 35.861300 | -120.786490 | Certain | milk thistle (Silybum marianum) | mustard (Brassica spp.) |
| Alameda | Coyote Hills Regional Park- Central | No | 37.552199 | -122.087803 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Contra Costa | Los Vaqueros Reservoir - Kellog Creek | No | 37.840191 | -121.723516 | Certain | bull thistle (Cirsium vulgare) | |
| Siskiyou | Lower Klamath NWR-Unit 12 #2 | No | 41.917480 | -121.648110 | Certain | other (note in Comments) | |
| Merced | Los Banos Wildlife Area 40 | No | 37.135020 | -120.788510 | Certain | cattails (Typha spp.) | |
| Santa Clara | Ed Levin County Park | No | 37.458700 | -121.865700 | Certain | other (note in Comments) | |
| Solano | Jepson Prairie Preserve | Yes | 38.277000 | -121.823000 | Certain | other (note in Comments) | |
| Monterey | Santa Lucia Preserve: Cienega Pond | Yes | 36.440000 | -121.793000 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Sutter | Sutter NWR | No | 39.073600 | -121.758600 | Certain | ||
| Sacramento | Melodic Farms | No | 38.467000 | -121.248000 | Certain | wild rose | bulrush or tule (Schoenoplectus spp.) |
| Yuba | Beale AFB | No | 39.138100 | -121.446100 | Certain | cattails (Typha spp.) | willows (Salix spp.) |
| San Luis Obispo | Cloisters Pond Morro Bay | No | 35.389099 | -120.861000 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Alameda | Sunol #2 | Yes | Certain | cattails (Typha spp.) | |||
| Fresno | Producer's Pond | No | 36.742400 | -120.231500 | Certain | cattails (Typha spp.) | |
| Yuba | Hoffman Road | No | 39.016041 | -121.516342 | Certain | other (note in Comments) | |
| Kern | Kern NWR- Highway 155 | Yes | 35.759530 | -119.582550 | Certain | cattails (Typha spp.) | |
| San Diego | Eagle Peak Road - Richie Ranch | Yes | Certain | cattails (Typha spp.) | |||
| Monterey | Old Stage Road Pond #1 | Yes | 36.654010 | -121.542100 | Certain | cattails (Typha spp.) | |
| Merced | Merced NWR: Duck Slough | Yes | 37.203200 | -120.600600 | Certain | bull thistle (Cirsium vulgare) | |
| Merced | Merced National Wildlife Refuge | Yes | 37.179500 | -120.634600 | Certain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| Siskiyou | Shasta Valley WA | No | 41.707160 | -122.475290 | Certain | other (note in Comments) | |
| Riverside | San Jacinto WA: Reclaimed Water Reservoir | Yes | 33.896160 | -117.112000 | Certain | cattails (Typha spp.) | |
| Los Angeles | Lake Hughes | No | 34.674300 | -118.445500 | Certain | ||
| Los Angeles | Madrona Marsh Nature Preserve | No | 33.827600 | -118.343100 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Merced | Merced NWR: East Farmfield 5 | Yes | 37.174290 | -120.603280 | Certain | mustard (Brassica spp.) | milk thistle (Silybum marianum) |
| Sacramento | Dairy at Arno Road and Valensin Ranch Road | No | 38.325801 | -121.324790 | Certain | other (note in Comments) | |
| Kern | Fay Ranch Road | No | 35.677900 | -118.276700 | Certain | cattails (Typha spp.) | |
| Yuba | Ostrom Road | No | 39.072100 | -121.477600 | Certain | other (note in Comments) | |
| Merced | Edminster Road | No | 37.322800 | -120.896500 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Merced | Youd Road | Yes | 37.445600 | -120.532700 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| San Benito | San Felipe Lake #2 | Yes | 36.984080 | -121.463700 | Certain | bulrush or tule (Schoenoplectus spp.) |
