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 |
|---|---|---|---|---|---|---|---|
| Sonoma | Old Adobe Road | No | 38.289040 | -122.645780 | Certain | other (note in Comments) | |
| Santa Barbara | Goleta Slough | Yes | 34.416900 | -119.840300 | Certain | other (note in Comments) | |
| Merced | Merced NWR: Dead Man Slough | No | 37.199900 | -120.616600 | Certain | ||
| Tulare | BLM Trail Area Alpaugh | No | 35.873368 | -119.496703 | Certain | ||
| Shasta | Little Tule River | Yes | 41.069000 | -121.472100 | Certain | stinging nettle (Urtica dioica) | |
| Solano | Burke Lane | Yes | 38.309066 | -121.845632 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Humboldt | Highway 101 at Drake Hill Road #2 | No | 40.555030 | -124.145710 | Certain | willows (Salix spp.) | |
| Colusa | Delevan Road at Four Mile Road | No | 39.322000 | -122.110100 | Certain | ||
| Fresno | Shell Road Feedlot | No | 36.222700 | -120.348000 | Certain | milk thistle (Silybum marianum) | |
| San Luis Obispo | Shell Creek Road #2 | Yes | 35.567509 | -120.334529 | Certain | cattails (Typha spp.) | Himalayan blackberry (Rubus armeniacus) |
| Sacramento | Laguna Creek at Eagles Nest Road | Yes | 38.483900 | -121.270000 | Certain | other (note in Comments) | Himalayan blackberry (Rubus armeniacus) |
| Merced | Hollister Land and Cattle - 02 | Yes | 37.231238 | -120.929083 | Certain | bulrush or tule (Schoenoplectus spp.) | willows (Salix spp.) |
| Yolo | Port of Sacramento | Yes | 38.560200 | -121.557900 | Certain | mustard (Brassica spp.) | bull thistle (Cirsium vulgare) |
| San Luis Obispo | Sea West Ranch | Yes | 35.473900 | -121.002300 | Certain | ||
| Merced | Interstate 5 at Highway 140 | Yes | 37.241800 | -121.085300 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Sacramento | Waegell | No | Certain | cattails (Typha spp.) | |||
| Sacramento | Wilton Fire Station | Yes | 38.400200 | -121.256500 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| San Joaquin | Lewallen Ranch | Yes | 38.057050 | -121.074800 | Certain | Himalayan blackberry (Rubus armeniacus) | cattails (Typha spp.) |
| Santa Cruz | Harkins Slough | No | 36.915200 | -121.802600 | Certain | other (note in Comments) | |
| Sacramento | Highway 104 at Ivie Road | No | 38.294700 | -121.242800 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Sutter | Pennington Road at Krehe Street | Yes | 39.282600 | -121.734560 | Certain | Himalayan blackberry (Rubus armeniacus) | cattails (Typha spp.) |
| Butte | Nelson Shippee Road | Yes | 39.538300 | -121.711700 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Kern | Klipstein Canyon Road: Center | No | 34.986400 | -119.393700 | Certain | other (note in Comments) | |
| Colusa | Colusa NWR Viewing Platform | No | 39.188281 | -122.044593 | Certain | cattails (Typha spp.) | |
| Stanislaus | Crabtree 3 | No | 37.678330 | -120.598470 | Certain | other (note in Comments) | |
| San Diego | Viejas Boulevard | No | 32.858003 | -116.614530 | Certain | ||
| San Benito | Cienega Road | No | 36.714300 | -121.277900 | Certain | mustard (Brassica spp.) | |
| Tuolumne | Yosemite Junction | Yes | 37.889423 | -120.494640 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Monterey | Fort Ord | Yes | 36.584480 | -121.723900 | Certain | stinging nettle (Urtica dioica) | |
| Alameda | Kaiser Gravel Company | No | 37.676484 | -121.829538 | Certain | cattails (Typha spp.) | |
| San Diego | Tule Lake (San Diego) | Yes | 32.674700 | -116.241000 | Certain | cattails (Typha spp.) | |
| Sacramento | White Rock Road at Prairie City SVRA Entrance | Yes | 38.603289 | -121.169930 | Certain | Himalayan blackberry (Rubus armeniacus) | willows (Salix spp.) |
| Shasta | Brown Road at Glenburn Road | No | 41.059200 | -121.498400 | Certain | other (note in Comments) | |
| Sacramento | Boessow Road | Yes | 38.255910 | -121.215250 | Certain | Himalayan blackberry (Rubus armeniacus) | milk thistle (Silybum marianum) |
| Solano | Admiral Callaghan Lane | Yes | 38.131800 | -122.224100 | Certain | bulrush or tule (Schoenoplectus spp.) | cattails (Typha spp.) |
| Sutter | Butte Sink WMA | No | 39.263800 | -121.905100 | Certain | ||
| Napa | Highway 29 Pond | Yes | 38.204280 | -122.257490 | Certain | cattails (Typha spp.) | willows (Salix spp.) |
| Kern | Kern National Wildlife Refuge | Yes | Certain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) | ||
| San Luis Obispo | Hi Mountain Road Ranchita Estates #1 | No | 35.204899 | -120.397003 | Certain | bull thistle (Cirsium vulgare) | |
| San Joaquin | Old River | No | 37.798970 | -121.524950 | Certain | ||
| Colusa | O'Hair Road | No | 39.195300 | -122.040600 | Certain | ||
| Fresno | Little Panoche Creek | No | 36.797700 | -120.749800 | Certain | cattails (Typha spp.) | |
| San Luis Obispo | Salinas River Wastewater Ponds | Yes | 35.650601 | -120.687218 | Certain | cattails (Typha spp.) | |
| San Diego | La Posta | No | 32.731985 | -116.413965 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Kern | Stockdale Highway at Buena Vista Road | No | 35.349200 | -119.126600 | Certain | ||
| Monterey | Hebert Road Pond | Yes | 36.763200 | -121.619400 | Certain | cattails (Typha spp.) | |
| Contra Costa | Mountain View Sanitation District | Yes | 38.023196 | -122.099261 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Merced | Orchard Road at Highway 140 | Yes | 37.251200 | -121.071300 | Certain | cattails (Typha spp.) | |
| Solano | Jehovah's Witness Pond | Yes | 38.267668 | -121.983969 | Certain | cattails (Typha spp.) | |
| Los Angeles | Munz Lake | No | 34.672700 | -118.432600 | Certain |
