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 Bitter Creek N.W.R. - Kristofik Nettles Yes 34.939200 -119.392000 Certain stinging nettle (Urtica dioica)
Kern Bitter Creek N.W.R. - Spanish Spring Yes 34.959700 -119.362000 Certain stinging nettle (Urtica dioica) willows (Salix spp.)
Kern Bitter Creek NWR Area: Klipstein Canyon Road Yes 34.972500 -119.412000 Certain stinging nettle (Urtica dioica)
Kern Bitter Creek NWR: Red Lake Nettles Yes 34.936639 -119.425260 Certain stinging nettle (Urtica dioica) other (note in Comments)
San Benito Bitterwater Creek Yes 36.327980 -120.934550 Certain
San Luis Obispo Bitterwater Road bridge Yes 35.709842 -120.304542 Certain bulrush or tule (Schoenoplectus spp.)
Merced Black Rascal Creek Yes 37.251160 -120.676600 Certain milk thistle (Silybum marianum) mustard (Brassica spp.)
San Diego Blackcanyon Road Ranch Pond Yes 33.182387 -116.781921 Certain cattails (Typha spp.)
Yuba Blair Way Yes 39.128507 -121.452172 Certain Himalayan blackberry (Rubus armeniacus)
Mendocino Bob Bradford Pond Yes 38.925466 -123.080673 Certain bulrush or tule (Schoenoplectus spp.) cattails (Typha spp.)
Kern Bob Powers Gateway Preserve Yes 35.625871 -118.478022 Certain stinging nettle (Urtica dioica)
San Diego Boden Canyon Ecological Reserve Pond Yes 33.115978 -116.894349 Certain cattails (Typha spp.)
Sacramento Boessow Road Yes 38.255910 -121.215250 Certain Himalayan blackberry (Rubus armeniacus) milk thistle (Silybum marianum)
Contra Costa Bollinger Canyon Road Pond Yes 37.750300 -121.908100 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
San Diego Borrego Springs Country Club Yes 33.242900 -116.357000 Certain cattails (Typha spp.)
Monterey Bradley Road Yes 35.861200 -120.779400 Certain milk thistle (Silybum marianum) mustard (Brassica spp.)
Monterey Bradley Road 2 Yes 35.861300 -120.786490 Certain milk thistle (Silybum marianum) mustard (Brassica spp.)
Sacramento Bradshaw between Hwy 16 and Elder Cr Rd Yes 38.518028 -121.330583 Certain Himalayan blackberry (Rubus armeniacus) cattails (Typha spp.)
Sacramento Bradshaw Christian Yes 38.456781 -121.343350 Certain Himalayan blackberry (Rubus armeniacus)
Marin Brazil Ranch Yes 38.243000 -122.943000 Uncertain Himalayan blackberry (Rubus armeniacus) other (note in Comments)
Yolo Brian Stucker Pond Yes 38.594764 -122.028299 Certain cattails (Typha spp.)
Alameda Broadmoor Pond Yes 37.723190 -121.723400 Certain bull thistle (Cirsium vulgare)
San Joaquin Brown Aggregates Yes 37.620291 -121.348881 Certain cattails (Typha spp.)
Alameda Brushy Peak Yes 37.746940 -121.708400 Certain mustard (Brassica spp.) other (note in Comments)
Monterey Bryant Canyon Road Pond Yes 36.443090 -121.312300 Certain bulrush or tule (Schoenoplectus spp.)
Fresno Bullard Ave. at Cedar Ave. Yes 36.825020 -119.756041 Certain cattails (Typha spp.)
Solano Burke Lane Yes 38.309066 -121.845632 Certain bulrush or tule (Schoenoplectus spp.)
Mendocino Burris Lane Pond Yes 39.275110 -123.067379 Certain Himalayan blackberry (Rubus armeniacus)
Butte Butte City Yes 39.464400 -121.988000 Uncertain cattails (Typha spp.)
Sutter Butte Sand and Gravel Yes 39.159135 -121.807589 Certain willows (Salix spp.)
Contra Costa Byron Hot Springs Road Yes 37.821548 -121.616743 Certain bulrush or tule (Schoenoplectus spp.)
Yolo Cache Creek Yes 38.684900 -121.885700 Certain cattails (Typha spp.)
Santa Clara Calero Reservoir Yes 37.181014 -121.769521 Certain cattails (Typha spp.)
Santa Clara Calero Reservoir Dam Yes 37.182500 -121.793500 Certain bulrush or tule (Schoenoplectus spp.) cattails (Typha spp.)
Kern California City Central Park Yes 35.127400 -117.945400 Certain cattails (Typha spp.)
Kern Caltrans ROW 1 Yes 35.627215 -118.477764 Certain cattails (Typha spp.)
Sacramento Calvine Road Yes 38.447600 -121.379000 Certain Himalayan blackberry (Rubus armeniacus)
Sacramento Calvine Road at Bader Road Yes 38.454200 -121.325700 Certain Himalayan blackberry (Rubus armeniacus)
Sacramento Calvine Road at Bradshaw Road Yes 38.456400 -121.339400 Certain Himalayan blackberry (Rubus armeniacus)
San Diego Cameron Corners Yes 32.627700 -116.468000 Certain cattails (Typha spp.)
Contra Costa Camp Parks Reserve Forces Training Area Yes 37.725447 -121.897860 Certain cattails (Typha spp.) willows (Salix spp.)
Santa Clara Cañada de los Osos Ecological Reserve- Tooth Lake Yes 37.040080 -121.420662 Certain cattails (Typha spp.) other (note in Comments)
Kern Canebreak Ecological Reserve Yes 35.737387 -118.172100 Certain Himalayan blackberry (Rubus armeniacus)
Amador Carbondale Rd near RR tracks Yes 38.410499 -121.009705 Certain Himalayan blackberry (Rubus armeniacus)
Amador Carbondale Rd nr Hwy 16 Yes 38.449943 -120.937665 Certain bulrush or tule (Schoenoplectus spp.) California blackberry (Rubus ursinus)
Orange Carr Park Yes 33.721700 -118.023400 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
El Dorado Carson Creek Bridge Yes 38.625730 -121.066090 Certain Himalayan blackberry (Rubus armeniacus) willows (Salix spp.)
Merced Central American 3 Yes 37.392100 -120.950300 Certain Himalayan blackberry (Rubus armeniacus)
Placer Chamberlain Ranch Yes 38.948937 -121.330197 Certain cattails (Typha spp.)
Los Angeles Chatsworth Reservoir Yes 34.235800 -118.629600 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
CSVXLS