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
San Luis Obispo Cuyama Pond Yes 34.928200 -119.519000 Certain bulrush or tule (Schoenoplectus spp.) cattails (Typha spp.)
San Luis Obispo Cuyama River Yes 35.067370 -119.989610 Certain cattails (Typha spp.)
Santa Barbara Cuyama River Bridge Yes 34.933840 -119.598900 Certain other (note in Comments)
Marin Cypress Grove Preserve Yes 38.167381 -122.900335 Certain bulrush or tule (Schoenoplectus spp.)
Alameda Dagnino Road Yes 37.746422 -121.744394 Certain cattails (Typha spp.)
San Diego Dairy Mart Road Yes 32.555000 -117.063000 Certain other (note in Comments)
Placer Dalby East Hwy. 65 Bypass Yes 38.963203 -121.370333 Certain Himalayan blackberry (Rubus armeniacus)
San Diego Dameron Valley Yes 33.421800 -116.829100 Certain
Kern Daniel Farms Yes 35.657269 -119.501111 Certain mallow in triticale triticale
Yolo Davis Yes 38.552000 -121.734000 Uncertain milk thistle (Silybum marianum)
Amador De Martini Yes 38.455320 -120.912830 Certain Himalayan blackberry (Rubus armeniacus)
Tulare Dead Pig Pond Yes 36.028486 -119.471855 Certain bulrush or tule (Schoenoplectus spp.)
Sacramento Deer Creek at Scott Road Yes 38.570900 -121.118900 Certain cattails (Typha spp.)
Tulare Deer Creek Avenue and Road 88 Yes 35.902700 -119.371500 Certain mallow in triticale mustard in triticale
Tulare Deer Creek North Yes 35.943835 -119.405539 Certain mallow in triticale triticale
Tulare Deer Creek Recharge Basin Yes 35.980730 -119.102644 Certain bulrush or tule (Schoenoplectus spp.)
Santa Clara Del Puerto Canyon Road Yes 37.384911 -121.462658 Certain cattails (Typha spp.)
Colusa Delevan Blind 4 Yes 39.326992 -122.114612 Certain bulrush or tule (Schoenoplectus spp.)
Colusa Delevan NWR- Northeast Corner Yes 39.341800 -122.092100 Uncertain cattails (Typha spp.)
Colusa Delevan T17.1 Yes 39.317100 -122.105400 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Colusa Delevan T21.2 Yes 39.306700 -122.109200 Certain cattails (Typha spp.)
Colusa Delevan T42.2 Yes 39.276660 -122.113240 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Colusa Delevan T43 Yes 39.277000 -122.101900 Certain cattails (Typha spp.)
Colusa Delevan T45.1 Yes 39.305300 -122.182300 Certain bulrush or tule (Schoenoplectus spp.) cattails (Typha spp.)
Merced Delhi Yes 37.433000 -120.778000 Uncertain cattails (Typha spp.)
Merced Delta and Henry Miller Yes 37.111260 -120.784760 Certain triticale
Solano Denverton Creek Yes 38.242103 -121.887909 Certain Himalayan blackberry (Rubus armeniacus)
San Diego Descanso Yes 32.854900 -116.605000 Certain other (note in Comments)
Sacramento Dillard Road at Clay Station Road Yes 38.428400 -121.200700 Certain Himalayan blackberry (Rubus armeniacus)
Calaveras Dogtown Road - Airola Ranch Yes 38.106872 -120.577011 Certain Himalayan blackberry (Rubus armeniacus)
Los Angeles Dominguez Lagoon Yes 33.919100 -118.260900 Uncertain bulrush or tule (Schoenoplectus spp.)
Merced Dos Palos Yes 36.985000 -120.635000 Uncertain bulrush or tule (Schoenoplectus spp.) cattails (Typha spp.)
Tulare Double M Yes 36.085392 -119.299529 Certain triticale
Sacramento Douglas Boulevard Yes 38.553400 -121.230800 Certain milk thistle (Silybum marianum)
Butte Dove Ridge Road Yes 39.587400 -121.666700 Certain Himalayan blackberry (Rubus armeniacus)
Marin Drake's Beach Pond Yes 38.028900 -122.965800 Certain bulrush or tule (Schoenoplectus spp.) bulrush or tule (Schoenoplectus spp.)
Tulare Dry Creek Quarry Yes 36.431434 -119.024162 Certain bulrush or tule (Schoenoplectus spp.)
Amador Drytown Yes 38.440500 -120.854700 Uncertain other (note in Comments)
Merced Duck Slough #2 Yes 37.208810 -120.664980 Certain Himalayan blackberry (Rubus armeniacus)
Merced Duck Slough #3 Yes 37.208670 -120.603150 Certain willows (Salix spp.) mustard (Brassica spp.)
Merced Duck Slough #4 Yes 37.207900 -120.634190 Certain Himalayan blackberry (Rubus armeniacus)
Amador Dufresne Pond Yes 38.292667 -120.817903 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
San Benito Duncan Avenue Yes 36.860000 -121.499000 Certain cattails (Typha spp.)
San Joaquin Durham Ferry Road Yes 37.664700 -121.287100 Certain cattails (Typha spp.)
Alameda Dyer Road #2 Yes 37.738614 -121.672026 Certain milk thistle (Silybum marianum) mustard (Brassica spp.)
Lake Eachus Lake Yes 39.085134 -122.933945 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
San Diego Eagle Peak Road - Richie Ranch Yes 33.020400 -116.709000 Certain cattails (Typha spp.)
Sacramento Eagle's Nest Yes 38.493638 -121.257133 Certain cattails (Typha spp.)
Sacramento Eagles Nest Road-West Yes 38.515600 -121.265000 Uncertain Himalayan blackberry (Rubus armeniacus)
Merced Eagleton Pond Yes 37.133300 -120.987100 Certain cattails (Typha spp.)
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