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 Confidencesort icon Primary Substrate Secondary Substrate
San Joaquin Liberty Road at Jack Tone Road Yes 38.236890 -121.155400 Certain other (note in Comments)
Colusa Putnam Road Rice Field Yes 39.325301 -121.942449 Certain other (note in Comments)
Orange Veeh Reservoir Yes 33.623300 -117.732700 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Tulare Verhoeven East Yes 36.006500 -119.456800 Certain mallow in triticale
Ventura Ventura River Yes 34.297630 -119.306030 Certain cattails (Typha spp.) other (note in Comments)
Sonoma Sonoma Raceway 2 Yes 38.164800 -122.472000 Certain bulrush or tule (Schoenoplectus spp.)
Sacramento Sloughhouse near Cresthill Yes 38.479029 -121.220988 Certain Himalayan blackberry (Rubus armeniacus)
Wasco Walters Pond Yes 45.104400 -121.315800 Certain cattails (Typha spp.)
Monterey Bradley Road Yes 35.861200 -120.779400 Certain milk thistle (Silybum marianum) mustard (Brassica spp.)
Merced Kelsey Reservoir - Kelsey Ranch Yes 37.538290 -120.353487 Certain milk thistle (Silybum marianum)
Sacramento Quail Run Lane Yes 38.394300 -121.423700 Certain Himalayan blackberry (Rubus armeniacus)
Santa Barbara Bell Road Pond Yes 34.933100 -119.649000 Certain cattails (Typha spp.) wheat
Santa Cruz Scott Creek Marsh Yes 37.041110 -122.226390 Certain bulrush or tule (Schoenoplectus spp.) cattails (Typha spp.)
San Bernardino Santa Ana River Pond - Colton Yes 34.051400 -117.345000 Certain cattails (Typha spp.)
Fresno Little Panoche Reservoir Dam Yes 36.783700 -120.795000 Certain cattails (Typha spp.)
San Luis Obispo Chorro Reservoir Yes 35.338989 -120.686300 Certain bulrush or tule (Schoenoplectus spp.)
Sacramento Grant Line Road at Bond Road Yes 38.411600 -121.313200 Certain Himalayan blackberry (Rubus armeniacus)
Calaveras Pond at Campo Seco and Waterton Rds Yes 38.229391 -120.837615 Certain cattails (Typha spp.)
Siskiyou Lower Klamath NWR-Unit 6A Yes 41.974300 -121.716900 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Kern Kern River Bridge/I-5 Yes 35.300600 -119.270200 Certain stinging nettle (Urtica dioica) other (note in Comments)
Kern Daniel Farms Yes 35.657269 -119.501111 Certain mallow in triticale triticale
El Dorado Tule Marsh Yes 38.620140 -121.071181 Certain bulrush or tule (Schoenoplectus spp.)
Monterey Old Stage Road Pond #1 Yes 36.654010 -121.542100 Certain cattails (Typha spp.)
Solano Denverton Creek Yes 38.242103 -121.887909 Certain Himalayan blackberry (Rubus armeniacus)
Solano Jepson Prairie Preserve Yes 38.277000 -121.823000 Certain other (note in Comments)
Yolo Sacramento River Levee Road 1 Yes 38.487548 -121.587021 Certain mustard (Brassica spp.)
Placer Wellington Way Yes 38.727200 -121.209700 Certain cattails (Typha spp.)
San Diego Warner Springs Hwy 79 and Hwy S2 Yes 33.250675 -116.674204 Certain mustard (Brassica spp.)
Sacramento Florin Road at Eagles Nest Road Yes 38.496000 -121.253000 Certain cattails (Typha spp.)
Calaveras Hunt Road #3 Yes 38.042140 -120.840470 Certain Himalayan blackberry (Rubus armeniacus)
Sacramento Mosher Road Yes 38.389400 -121.344000 Certain Himalayan blackberry (Rubus armeniacus)
Monterey Laguna Seca Yes 36.571400 -121.768000 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
San Diego Hwy. 79, Warner Springs South Yes 33.252065 -116.671995 Certain bulrush or tule (Schoenoplectus spp.) other (note in Comments)
Riverside San Jacinto WA: San Jacinto River Yes 33.848400 -117.129600 Certain cattails (Typha spp.)
San Benito San Felipe Lake #2 Yes 36.984080 -121.463700 Certain bulrush or tule (Schoenoplectus spp.)
Madera Madera Canal Cattails No. 1 Yes 37.047600 -119.890500 Certain cattails (Typha spp.)
Alameda Laughlin Road at Lake Road Yes 37.734020 -121.713900 Certain other (note in Comments) other (note in Comments)
Sacramento Angle Road Yes 38.312284 -121.211813 Certain cattails (Typha spp.)
Marin Drake's Beach Pond Yes 38.028900 -122.965800 Certain bulrush or tule (Schoenoplectus spp.) bulrush or tule (Schoenoplectus spp.)
Placer Gladding Hwy. 65 Yes 38.917783 -121.321013 Certain Himalayan blackberry (Rubus armeniacus)
San Benito Tres Pinos Creek Yes 36.789540 -121.327460 Certain cattails (Typha spp.)
Sutter Highway 113 Yes 38.941900 -121.679700 Certain
Merced Volta Lake Marsh Yes 37.100600 -120.939000 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Merced South Buhach Road at Highway 140 Yes 37.301900 -120.574200 Certain Himalayan blackberry (Rubus armeniacus)
San Benito John Smith Rd- Floor of Santa Ana Valley Yes 36.823989 -121.300006 Certain milk thistle (Silybum marianum)
Santa Clara Calero Reservoir Yes 37.181014 -121.769521 Certain cattails (Typha spp.)
Butte Lone Tree Road Yes 39.406300 -121.574700 Certain Himalayan blackberry (Rubus armeniacus)
Stanislaus Christman Levee II Yes 37.621790 -121.182590 Certain milk thistle (Silybum marianum) mustard (Brassica spp.)
Merced Merced Wastewater Treatment Yes 37.236100 -120.526200 Certain cattails (Typha spp.) bull thistle (Cirsium vulgare)
Alameda Shadow Cliffs Lake Yes 37.665614 -121.831512 Certain cattails (Typha spp.)
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