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
Placer Wellington Way Yes 38.727200 -121.209700 Certain cattails (Typha spp.)
Colusa Wescott Road Yes 39.152070 -122.022200 Certain cattails (Typha spp.)
Merced West Bear Creek Levee 1 Yes 37.256620 -120.828890 Certain milk thistle (Silybum marianum)
Merced West Bear Creek Levee 2 Yes 37.278410 -120.827200 Certain milk thistle (Silybum marianum)
Butte West Biggs Yes 39.412000 -121.862000 Uncertain cattails (Typha spp.)
Butte West Biggs #2 Yes 39.412000 -121.787000 Uncertain cattails (Typha spp.)
Butte West Biggs #3 Yes 39.407800 -121.825530 Uncertain cattails (Typha spp.)
Colusa West Biggs #4 Yes 39.411400 -121.993400 Uncertain cattails (Typha spp.)
Solano West Birds Landing Yes 38.128400 -121.906300 Uncertain cattails (Typha spp.)
Colusa West Colusa Yes 39.208200 -122.103100 Uncertain cattails (Typha spp.)
Colusa West Colusa #2 Yes 39.207900 -122.094200 Uncertain cattails (Typha spp.)
Stanislaus West Crows Landing Yes 37.393000 -121.090000 Uncertain cattails (Typha spp.)
Placer West Ferrari Ranch Road Yes 38.868449 -121.322193 Certain Himalayan blackberry (Rubus armeniacus)
Glenn West Glenn Yes 39.522000 -122.032500 Uncertain cattails (Typha spp.)
Glenn West Glenn #2 Yes 39.521700 -122.051300 Uncertain cattails (Typha spp.)
Glenn West Glenn #3 Yes 39.521900 -122.070200 Uncertain cattails (Typha spp.)
Butte West Gridley Yes 39.363400 -121.716000 Uncertain cattails (Typha spp.)
Butte West Gridley #2 Yes 39.363000 -121.865000 Uncertain cattails (Typha spp.)
Butte West Gridley #3 Yes 39.362896 -121.881208 Uncertain cattails (Typha spp.)
Yuba West Hammonton Yes 39.192000 -121.457000 Uncertain cattails (Typha spp.)
Kern West Kern WD No. 2 Yes 35.300300 -119.274000 Certain stinging nettle (Urtica dioica)
Sacramento West Lane Yes 38.288100 -121.244900 Certain Himalayan blackberry (Rubus armeniacus)
San Bernardino West Loma Linda Yes 34.048000 -117.261000 Uncertain bulrush or tule (Schoenoplectus spp.)
San Bernardino West Loma Linda #2 Yes 34.048000 -117.265000 Uncertain bulrush or tule (Schoenoplectus spp.)
Stanislaus West Main Street at Crows Landing Road Yes 37.492900 -120.994500 Certain bulrush or tule (Schoenoplectus spp.)
San Joaquin West Manteca Yes 37.783000 -121.302000 Uncertain Giant reed (Arundo donax)
Colusa West Maxwell Yes 39.276800 -122.210200 Uncertain cattails (Typha spp.)
Glenn West Norman Yes 39.407400 -122.210800 Uncertain cattails (Typha spp.)
Sacramento West of Sunrise Yes 38.497800 -121.243000 Certain Himalayan blackberry (Rubus armeniacus)
Yolo West Sacramento Yes 38.574000 -121.598000 Uncertain milk thistle (Silybum marianum) mustard (Brassica spp.)
San Diego West San Luis Rey Yes 33.231000 -117.342000 Uncertain bulrush or tule (Schoenoplectus spp.)
Santa Barbara West Santa Barbara Yes 34.441600 -119.817700 Uncertain cattails (Typha spp.) bulrush or tule (Schoenoplectus spp.)
Sacramento West Scott Road Yes 38.554000 -121.141000 Uncertain Himalayan blackberry (Rubus armeniacus)
Santa Cruz West Struve Slough Yes 36.916393 -121.779242 Uncertain bulrush or tule (Schoenoplectus spp.)
Stanislaus West Stuhr Road Yes 37.327210 -121.103680 Certain cattails (Typha spp.)
Butte Western Triangle Yes 39.519400 -121.709200 Certain Himalayan blackberry (Rubus armeniacus) cattails (Typha spp.)
El Dorado Wetsel-Oviatt Road Yes 38.603786 -121.052470 Certain willows (Salix spp.) milk thistle (Silybum marianum)
San Diego Whelan Lake Yes 33.244400 -117.337700 Certain cattails (Typha spp.)
Sacramento White Road Rd Inaccessible Pond Yes 38.616500 -121.107187 Uncertain bulrush or tule (Schoenoplectus spp.)
Mariposa White Rock Road 13.4 miles from Old Highway Yes 37.306950 -120.112850 Certain milk thistle (Silybum marianum) cattails (Typha spp.)
Mariposa White Rock Road 14.5 miles from Old Highway Yes 37.299020 -120.127520 Certain milk thistle (Silybum marianum) willows (Salix spp.)
Sacramento White Rock Road at Placerville Road Yes 38.575700 -121.298200 Certain cattails (Typha spp.)
Butte Wicks Corner Yes 39.587881 -121.623201 Certain Himalayan blackberry (Rubus armeniacus)
Kern Wildwood Road #2 Yes 35.729069 -119.439124 Certain triticale
Colusa Williams Yes 39.156000 -122.144000 Uncertain cattails (Typha spp.)
Stanislaus Willms Ranch House Yes 37.801590 -120.646480 Certain Himalayan blackberry (Rubus armeniacus) willows (Salix spp.)
Stanislaus Willms Road Pond Yes 37.784800 -120.620000 Certain cattails (Typha spp.)
Glenn Willows Yes 39.514100 -122.200600 Uncertain cattails (Typha spp.)
Napa Wilms Ranch Yes 38.663300 -122.477000 Certain bull thistle (Cirsium vulgare)
Sacramento Wilton Fire Station Yes 38.400200 -121.256500 Certain Himalayan blackberry (Rubus armeniacus)
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