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 |
|---|---|---|---|---|---|---|---|
| Alameda | Vallecitos Lane | Yes | 37.596331 | -121.860909 | Certain | other (note in Comments) | |
| Merced | Los Banos | Yes | 37.075000 | -120.828000 | Uncertain | cattails (Typha spp.) | |
| Stanislaus | Christman Levee IV | Yes | 37.626300 | -121.182980 | Certain | mustard (Brassica spp.) | milk thistle (Silybum marianum) |
| Sacramento | Lopez Ag. Services | Yes | 38.501100 | -121.251800 | Certain | milk thistle (Silybum marianum) | |
| Yolo | Port of West Sacramento | Yes | 38.563800 | -121.555500 | Certain | mustard (Brassica spp.) | other (note in Comments) |
| Santa Cruz | Antonelli Pond | Yes | 36.957400 | -122.059800 | Certain | cattails (Typha spp.) | willows (Salix spp.) |
| Merced | O'Neill Forebay WA #2 | Yes | 37.081830 | -121.025520 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Santa Clara | Lake Cunningham Park | Yes | 37.337100 | -121.815600 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Sacramento | Clay Station Rd and Momtoma Ln. | Yes | 38.405835 | -121.173583 | Certain | cattails (Typha spp.) | |
| Sacramento | Scott Road | Yes | 38.560000 | -121.120000 | Uncertain | Himalayan blackberry (Rubus armeniacus) | |
| Colusa | Southwest Maxwell | Yes | 39.248500 | -122.234400 | Uncertain | cattails (Typha spp.) | |
| Monterey | Bradley Road | Yes | 35.861200 | -120.779400 | Certain | milk thistle (Silybum marianum) | mustard (Brassica spp.) |
| Colusa | Ohm Road | Yes | 39.063720 | -122.041900 | Certain | cattails (Typha spp.) | |
| Yuba | Arboga | Yes | 39.051900 | -121.555500 | Uncertain | other (note in Comments) | |
| Yolo | CR 102 and Kentucky Ave. | Yes | 38.691382 | -121.727915 | Certain | stinging nettle (Urtica dioica) | mustard (Brassica spp.) |
| Tulare | Dry Creek Quarry | Yes | 36.431434 | -119.024162 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| Merced | Van Clief Road at 6th Avenue | Yes | 37.308060 | -120.833860 | Certain | Himalayan blackberry (Rubus armeniacus) | willows (Salix spp.) |
| Kern | Kern River No. 1 | Yes | 35.309300 | -119.245000 | Certain | stinging nettle (Urtica dioica) | mesquite (Prosopis spp.) |
| Placer | Twelve Bridges and Hwy. 65 West | Yes | 38.853361 | -121.300693 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Glenn | East Norman | Yes | 39.407900 | -122.117300 | Uncertain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| Shasta | Little Tule River | Yes | 41.069000 | -121.472100 | Certain | stinging nettle (Urtica dioica) | |
| Merced | Gun Club Road #2 | Yes | 37.231300 | -120.940000 | Certain | cattails (Typha spp.) | |
| Napa | Saint Supéry Vineyards | Yes | 38.639700 | -122.365700 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Kern | Bitter Creek N.W.R. - Bonnie's Pond | Yes | 34.935130 | -119.415900 | Certain | bull thistle (Cirsium vulgare) | |
| Lassen | Leavitt Correctional Center | Yes | 40.398200 | -120.492200 | Certain | cattails (Typha spp.) | |
| Stanislaus | La Grange | Yes | 37.661000 | -120.455000 | Uncertain | cattails (Typha spp.) | |
| San Bernardino | West Loma Linda #2 | Yes | 34.048000 | -117.265000 | Uncertain | bulrush or tule (Schoenoplectus spp.) | |
| San Diego | Whelan Lake | Yes | 33.244400 | -117.337700 | Certain | cattails (Typha spp.) | |
| Butte | Northeast Butte City | Yes | 39.473700 | -121.974300 | Uncertain | cattails (Typha spp.) | |
| San Benito | Duncan Avenue | Yes | 36.860000 | -121.499000 | Certain | cattails (Typha spp.) | |
| Merced | Nelander Road | Yes | 37.307800 | -120.842700 | Certain | willows (Salix spp.) | Himalayan blackberry (Rubus armeniacus) |
| Tulare | Globe Drive Pond | Yes | 36.097799 | -118.811903 | Certain | cattails (Typha spp.) | |
| Orange | El Toro | Yes | 33.680000 | -117.658000 | Uncertain | bulrush or tule (Schoenoplectus spp.) | |
| San Benito | Highway 25 | Yes | 36.347300 | -120.957500 | Certain | cattails (Typha spp.) | mustard (Brassica spp.) |
| Glenn | West Glenn #3 | Yes | 39.521900 | -122.070200 | Uncertain | cattails (Typha spp.) | |
| Placer | Chamberlain Ranch | Yes | 38.950600 | -121.325000 | Certain | cattails (Typha spp.) | |
| San Diego | Lindo Lake | Yes | 32.857400 | -116.915100 | Certain | cattails (Typha spp.) | |
| Stanislaus | Pete Miller | Yes | 37.256976 | -121.097660 | Certain | mustard (Brassica spp.) | other (note in Comments) |
| Siskiyou | Lower Klamath NWR-Unit 13A | Yes | 41.910260 | -121.705330 | Certain | stinging nettle (Urtica dioica) | |
| Merced | South of Merced | Yes | 37.079000 | -120.476000 | Uncertain | cattails (Typha spp.) | |
| Sacramento | Elder Creek II | Yes | 38.518200 | -121.312220 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Kern | Wind Wolves: Sag Pond | Yes | 34.946600 | -119.166000 | Certain | cattails (Typha spp.) | |
| Sutter | Sutter Bypass at Gilsizer Slough | Yes | 38.999200 | -121.716200 | Uncertain | bulrush or tule (Schoenoplectus spp.) | cattails (Typha spp.) |
| Tulare | Avenue 120 #3 | Yes | 35.999450 | -119.472440 | Certain | ||
| San Luis Obispo | Highway 46 at Highway 1 | Yes | 35.542200 | -120.964900 | Certain | bulrush or tule (Schoenoplectus spp.) | mustard (Brassica spp.) |
| San Joaquin | Lewallen Ranch | Yes | 38.057050 | -121.074800 | Certain | Himalayan blackberry (Rubus armeniacus) | cattails (Typha spp.) |
| Sutter | Pennington Road at Krehe Street | Yes | 39.282600 | -121.734560 | Certain | Himalayan blackberry (Rubus armeniacus) | cattails (Typha spp.) |
| San Joaquin | Liberty Road at Jack Tone Road | Yes | 38.236890 | -121.155400 | Certain | other (note in Comments) | |
| Butte | Dove Ridge Road | Yes | 39.587400 | -121.666700 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Sacramento | Zinfandel Drive | Yes | 38.581600 | -121.283900 | Certain | Himalayan blackberry (Rubus armeniacus) |
