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
Merced Interstate 5 at Cottonwood Road Yes 37.187790 -121.073640 Certain mustard (Brassica spp.) other (note in Comments)
Merced Interstate 5 at Highway 140 Yes 37.241800 -121.085300 Certain bulrush or tule (Schoenoplectus spp.)
Kern Interstate 5 at Kings County Line Yes 35.786140 -119.780450 Certain cattails (Typha spp.)
Stanislaus Interstate 5 at Patterson Yes 37.438500 -121.161000 Certain bulrush or tule (Schoenoplectus spp.)
Orange Interstate 5 at Sand Canyon Avenue Yes 33.676890 -117.764780 Certain milk thistle (Silybum marianum)
Sacramento Iron Point Road Yes 38.646300 -121.104400 Certain Himalayan blackberry (Rubus armeniacus)
Riverside Jackrabbit Trail Yes 33.893700 -117.070300 Certain cattails (Typha spp.)
Sacramento Jackson and Bradshaw Yes 38.530987 -121.338308 Certain cattails (Typha spp.)
Sacramento Jackson Hwy - Aspen IV washwater ponds Yes 38.530729 -121.339322 Certain cattails (Typha spp.)
Sacramento Jackson Hwy Pond 0.8 mi W Stonehouse Rd Yes 38.496134 -121.116763 Certain Himalayan blackberry (Rubus armeniacus)
Sacramento Jackson Hwy Quarry Yes 38.507882 -121.254054 Certain milk thistle (Silybum marianum)
San Diego Jacumba Yes 32.618314 -116.192493 Certain cattails (Typha spp.)
Solano Jehovah's Witness Pond Yes 38.267668 -121.983969 Certain cattails (Typha spp.)
Stanislaus Jennings Road Yes 37.538000 -121.066000 Uncertain other (note in Comments)
Solano Jepson Prairie Preserve Yes 38.277000 -121.823000 Certain other (note in Comments)
Shasta Jim Day Road Yes 41.042900 -121.387700 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)
Lassen Johnstonville Yes 40.379340 -120.555370 Certain cattails (Typha spp.)
Napa Juliana Vineyard Pond #2 Yes 38.655900 -122.396700 Certain cattails (Typha spp.)
Wasco Juniper Flat Marsh Yes 45.211000 -121.136500 Certain cattails (Typha spp.)
San Bernardino Jurupa Street Yes 34.043800 -117.542200 Certain cattails (Typha spp.)
Alameda Kaiser Gravel Company Yes 37.676484 -121.829538 Certain cattails (Typha spp.)
Kings Kansas Avenue Yes 36.212000 -119.547900 Certain other (note in Comments)
Merced Keaton and 4th Yes 37.323210 -120.910930 Certain Himalayan blackberry (Rubus armeniacus)
Merced Kelly Ranch Levee Yes 37.276800 -120.826800 Certain milk thistle (Silybum marianum)
Merced Kelsey Reservoir - Kelsey Ranch Yes 37.538290 -120.353487 Certain milk thistle (Silybum marianum)
Kern Kelso Valley - Ranch Ponds Yes 35.371781 -118.218153 Certain cattails (Typha spp.)
Kern Kern Lake Preserve Yes 35.111100 -119.052900 Certain cattails (Typha spp.)
Kern Kern NWR Fowler Canal Yes 35.775500 -119.611700 Certain bull thistle (Cirsium vulgare)
Kern Kern NWR Unit 1 Yes 35.727100 -119.598200 Certain
Kern Kern NWR- Highway 155 Yes 35.759530 -119.582550 Certain cattails (Typha spp.)
Kern Kern NWR- Tour Route #1 Yes 35.741100 -119.585000 Certain cattails (Typha spp.)
Kern Kern NWR- Tour Route #2 Yes 35.733600 -119.584800 Certain cattails (Typha spp.)
Kern Kern River Bike Path No. 1 Yes 35.316400 -119.223000 Certain stinging nettle (Urtica dioica)
Kern Kern River Bridge/I-5 Yes 35.300600 -119.270200 Certain stinging nettle (Urtica dioica) other (note in Comments)
Kern Kern River No. 1 Yes 35.309300 -119.245000 Certain stinging nettle (Urtica dioica) mesquite (Prosopis spp.)
Kern Kern River No. 2 Yes 35.308000 -119.245000 Certain stinging nettle (Urtica dioica) mesquite (Prosopis spp.)
Kern Kern River Parkway Yes 35.329900 -119.189600 Certain
Kern Kern River Preserve - Prince Pond Yes 35.668471 -118.327131 Certain cattails (Typha spp.) stinging nettle (Urtica dioica)
Kern Kern River Preserve HQ Yes 35.664654 -118.304724 Certain stinging nettle (Urtica dioica) mallow (Malva sp.)
Kern Kern Rock Company: Wheeler Ridge Yes 35.009100 -118.962100 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Kern Kern Water Bank M7-1 Yes 35.309400 -119.280000 Certain stinging nettle (Urtica dioica) mesquite (Prosopis spp.)
Merced Kesterson NWR Yes 37.258700 -120.892000 Certain other (note in Comments)
Merced Kesterson NWR- Gallo Ponds Yes 37.269900 -120.923600 Certain cattails (Typha spp.)
Sacramento Kiefer Boulevard Yes 38.513100 -121.194000 Certain Himalayan blackberry (Rubus armeniacus) other (note in Comments)
Sacramento Kilgore Road at International Drive Yes 38.583200 -121.270700 Certain other (note in Comments)
San Bernardino Kimball Avenue Yes 33.966900 -117.633000 Certain bulrush or tule (Schoenoplectus spp.) cattails (Typha spp.)
San Luis Obispo Kirschenmann Rd Yes 34.933362 -119.601223 Certain stinging nettle (Urtica dioica)
Sacramento Koessler Dairy Yes 38.280510 -121.311060 Certain Himalayan blackberry (Rubus armeniacus)
San Joaquin Koster Road Quarry Yes 37.614413 -121.327958 Certain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
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