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 |
|---|---|---|---|---|---|---|---|
| Fresno | Mendota Wildlife Area Field 22 | Yes | 36.708300 | -120.293300 | Certain | cattails (Typha spp.) | |
| Merced | Merced NWR: Duck Slough | Yes | 37.203200 | -120.600600 | Certain | bull thistle (Cirsium vulgare) | |
| Stanislaus | East Oakdale | Yes | 37.766000 | -120.828000 | Certain | cattails (Typha spp.) | |
| Kern | Rio Bravo Country Club | Yes | 35.408200 | -118.842100 | Certain | ||
| Madera | Rd 12 and Avenue 24 Dairy | Yes | 37.096912 | -120.340204 | Certain | triticale | |
| San Diego | Northeast San Luis Rey | Yes | 33.250000 | -117.299000 | Uncertain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| Glenn | Northwest Princeton | Yes | 39.451700 | -122.055800 | Uncertain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| Yolo | Brian Stucker Pond | Yes | 38.594555 | -122.028229 | Certain | cattails (Typha spp.) | |
| Merced | Interstate 5 at Cottonwood Road | Yes | 37.187790 | -121.073640 | Certain | mustard (Brassica spp.) | other (note in Comments) |
| Sacramento | Triangle Rock Products, No. 3 | Yes | 38.500000 | -121.250300 | Certain | bull thistle (Cirsium vulgare) | |
| Shasta | Locust Road | Yes | 40.428400 | -122.273510 | Certain | other (note in Comments) | |
| Merced | Yosemite Lake | Yes | 37.368000 | -120.435000 | Certain | other (note in Comments) | |
| Sacramento | Wilton Fire Station | Yes | 38.400200 | -121.256500 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Yuba | Hwy. 20 and Woodruff Lane | Yes | 39.208442 | -121.519623 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Alameda | Vallecitos Lane | Yes | 37.596331 | -121.860909 | Certain | other (note in Comments) | |
| Tulare | Creighton Ranch | Yes | 36.069444 | -119.452778 | Certain | other (note in Comments) | |
| Monterey | Warner Lake | Yes | 36.880300 | -121.743400 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Ventura | Lake Sherwood | Yes | 34.137500 | -118.861100 | Certain | cattails (Typha spp.) | willows (Salix spp.) |
| San Luis Obispo | Cuyama River | Yes | 35.067370 | -119.989610 | Certain | cattails (Typha spp.) | |
| Merced | Southwest Merced #2 | Yes | 37.265400 | -120.512400 | Uncertain | cattails (Typha spp.) | |
| Sutter | Sutter Causeway | Yes | 38.976000 | -121.673000 | Uncertain | cattails (Typha spp.) | |
| Sacramento | Excelsior Road at Elder Creek Road | Yes | 38.514910 | -121.302800 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Kern | Wind Wolves: Santiago Springs | Yes | 34.938600 | -119.296000 | Certain | stinging nettle (Urtica dioica) | willows (Salix spp.) |
| San Joaquin | West Manteca | Yes | 37.783000 | -121.302000 | Uncertain | Giant reed (Arundo donax) | |
| Merced | Central American 3 | Yes | Certain | Himalayan blackberry (Rubus armeniacus) | |||
| Colusa | Southwest Maxwell | Yes | 39.248500 | -122.234400 | Uncertain | cattails (Typha spp.) | |
| Monterey | Bradley Road 2 | Yes | 35.861300 | -120.786490 | Certain | milk thistle (Silybum marianum) | mustard (Brassica spp.) |
| Siskiyou | Tule Lake marsh | Yes | 41.946580 | -121.543658 | Certain | cattails (Typha spp.) | |
| San Diego | Santa Ysabel Ranch | Yes | Certain | Himalayan blackberry (Rubus armeniacus) | stinging nettle (Urtica dioica) | ||
| Merced | South Livingston | Yes | 37.371000 | -120.723000 | Uncertain | cattails (Typha spp.) | |
| San Luis Obispo | Cholame Valley Road Wetland | Yes | 35.779725 | -120.332179 | Certain | cattails (Typha spp.) | |
| Yolo | Port of West Sacramento | Yes | 38.563800 | -121.555500 | Certain | mustard (Brassica spp.) | other (note in Comments) |
| Riverside | San Jacinto WA: Marsh A | Yes | 33.872600 | -117.116500 | Uncertain | cattails (Typha spp.) | willows (Salix spp.) |
| Tulare | Toledo Pit | Yes | 36.056300 | -119.408700 | Certain | cattails (Typha spp.) | |
| Santa Cruz | Antonelli Pond | Yes | 36.957400 | -122.059800 | Certain | cattails (Typha spp.) | willows (Salix spp.) |
| Madera | River Road, Madera Co. | Yes | 37.037900 | -119.937300 | Certain | milk thistle (Silybum marianum) | |
| Glenn | East Norman | Yes | 39.407900 | -122.117300 | Uncertain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| Monterey | Old Stage Road Pond #1 | Yes | 36.654010 | -121.542100 | Certain | cattails (Typha spp.) | |
| Sacramento | Calvine Road at Bader Road | Yes | 38.454200 | -121.325700 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| San Luis Obispo | Feenstra Road | Yes | 35.570700 | -120.569600 | Certain | cattails (Typha spp.) | |
| Merced | North Grasslands Wildlife Area - China Island Unit | Yes | 37.310874 | -120.990243 | Certain | milk thistle (Silybum marianum) | mustard (Brassica spp.) |
| Yuba | Arboga | Yes | 39.051900 | -121.555500 | Uncertain | other (note in Comments) | |
| Shasta | Jim Day Road | Yes | 41.042900 | -121.387700 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Merced | North Grasslands Wildlife Area - Salt Slough Unit | Yes | 37.169922 | -120.821344 | Certain | milk thistle (Silybum marianum) | |
| Tulare | Dry Creek Quarry | Yes | 36.431434 | -119.024162 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Siskiyou | Lower Klamath NWR-Unit 3A East | Yes | 41.980070 | -121.717650 | Certain | stinging nettle (Urtica dioica) | |
| Butte | Northeast Butte City | Yes | 39.473700 | -121.974300 | Uncertain | cattails (Typha spp.) | |
| Riverside | Warner Road Pond | Yes | Certain | bull thistle (Cirsium vulgare) | mustard (Brassica spp.) | ||
| Tulare | Globe Drive Pond | Yes | 36.097799 | -118.811903 | Certain | cattails (Typha spp.) | |
| San Benito | San Felipe Lake #2 | Yes | 36.984080 | -121.463700 | Certain | bulrush or tule (Schoenoplectus spp.) |
