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 Colonysort icon Latitude Longitude Location Confidence Primary Substrate Secondary Substrate
Monterey Salinas Yes 36.677000 -121.656000 Uncertain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Kern Sierra Way Pond Yes 35.679800 -118.383900 Certain cattails (Typha spp.)
Stanislaus 26 Mile Road Yes 37.866600 -120.879000 Certain Himalayan blackberry (Rubus armeniacus)
Merced I-5 North ROW Yes 37.184500 -121.067100 Certain milk thistle (Silybum marianum)
Fresno Little Panoche Reservoir Yes 36.784300 -120.799600 Certain bull thistle (Cirsium vulgare)
Merced North Atwater Yes 37.466900 -120.602300 Uncertain cattails (Typha spp.)
Sutter North Robbins #2 Yes 38.885000 -121.707000 Uncertain cattails (Typha spp.)
Siskiyou Lower Klamath NWR-Unit 12C Yes 41.912120 -121.644490 Certain stinging nettle (Urtica dioica)
San Joaquin Durham Ferry Road Yes 37.664700 -121.287100 Certain cattails (Typha spp.)
Kern Klipstein Canyon Road: South Yes 34.972500 -119.412000 Certain stinging nettle (Urtica dioica)
Kern West Kern WD No. 2 Yes 35.300300 -119.274000 Certain stinging nettle (Urtica dioica)
Merced Duck Slough #4 Yes 37.207900 -120.634190 Certain Himalayan blackberry (Rubus armeniacus)
Colusa Southwest Colusa Yes 39.128700 -122.143500 Uncertain cattails (Typha spp.)
Monterey Bradley Road Yes 35.861200 -120.779400 Certain milk thistle (Silybum marianum) mustard (Brassica spp.)
Lake Northwest Nice Yes 39.155300 -122.890700 Uncertain Himalayan blackberry (Rubus armeniacus)
Siskiyou Tulelake Rd 106 Yes 41.972254 -121.367083 Certain cattails (Typha spp.)
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