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 | Dos Palos | Yes | 36.985000 | -120.635000 | Uncertain | bulrush or tule (Schoenoplectus spp.) | cattails (Typha spp.) |
| Sacramento | Douglas Boulevard | Yes | 38.553400 | -121.230800 | Certain | milk thistle (Silybum marianum) | |
| Butte | Dove Ridge Road | Yes | 39.587400 | -121.666700 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Placer | Dowd and Waltz | Yes | 38.942454 | -121.362705 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Humboldt | Drake Hill Road | No | 40.563100 | -124.154600 | Certain | ||
| Marin | Drake's Beach Pond | Yes | 38.028900 | -122.965800 | Certain | bulrush or tule (Schoenoplectus spp.) | bulrush or tule (Schoenoplectus spp.) |
| Sacramento | Dry Creek at Elliot Road | No | 38.255460 | -121.171920 | Certain | ||
| Tulare | Dry Creek Quarry | Yes | 36.431434 | -119.024162 | Certain | bulrush or tule (Schoenoplectus spp.) | |
| San Benito | Dry Lake | No | 36.479760 | -121.073720 | Certain | ||
| Amador | Drytown | Yes | 38.440500 | -120.854700 | Uncertain | other (note in Comments) | |
| Merced | Duck Slough #1 | No | 37.204030 | -120.593400 | Certain | milk thistle (Silybum marianum) | |
| Merced | Duck Slough #2 | Yes | 37.208810 | -120.664980 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Merced | Duck Slough #3 | Yes | 37.208670 | -120.603150 | Certain | willows (Salix spp.) | mustard (Brassica spp.) |
| Merced | Duck Slough #4 | Yes | 37.207900 | -120.634190 | Certain | Himalayan blackberry (Rubus armeniacus) | |
| Amador | Dufresne Pond | Yes | 38.292667 | -120.817903 | Certain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| San Benito | Duncan Avenue | Yes | 36.860000 | -121.499000 | Certain | cattails (Typha spp.) | |
| San Joaquin | Durham Ferry Road | Yes | 37.664700 | -121.287100 | Certain | cattails (Typha spp.) | |
| San Diego | Dye Road #1 | No | Certain | ||||
| San Diego | Dye Road #2 | No | 33.007900 | -116.870100 | Certain | ||
| Alameda | Dyer Road #2 | Yes | 37.738614 | -121.672026 | Certain | milk thistle (Silybum marianum) | mustard (Brassica spp.) |
| San Diego | Eagle Peak Road - Richie Ranch | Yes | Certain | cattails (Typha spp.) | |||
| Sacramento | Eagle's Nest | Yes | 38.493638 | -121.257133 | Certain | cattails (Typha spp.) | |
| Sacramento | Eagles Nest Road-West | Yes | 38.515600 | -121.265000 | Uncertain | Himalayan blackberry (Rubus armeniacus) | |
| Kern | East Bakersfield | Yes | 35.371000 | -118.803000 | Uncertain | bulrush or tule (Schoenoplectus spp.) | |
| Butte | East Butte City | Yes | 39.464800 | -121.969800 | Uncertain | cattails (Typha spp.) | |
| Glenn | East Butte City #2 | Yes | 39.464700 | -121.895100 | Uncertain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| San Diego | East Chula Vista | Yes | 32.698622 | -116.981049 | Uncertain | cattails (Typha spp.) | |
| Stanislaus | East Crows Landing | Yes | 37.393000 | -120.992000 | Uncertain | cattails (Typha spp.) | |
| Colusa | East Delevan | Yes | 39.353400 | -122.115800 | Uncertain | cattails (Typha spp.) | |
| Sutter | East Levee Road at Riego Road | Yes | 38.750900 | -121.494100 | Certain | cattails (Typha spp.) | |
| Merced | East Los Banos | Yes | 37.066000 | -120.751000 | Uncertain | bulrush or tule (Schoenoplectus spp.) | |
| Glenn | East Norman | Yes | 39.407900 | -122.117300 | Uncertain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| Glenn | East Norman #2 | Yes | Uncertain | cattails (Typha spp.) | |||
| Glenn | East Norman #3 | Yes | 39.407600 | -122.155300 | Uncertain | cattails (Typha spp.) | |
| Stanislaus | East Oakdale | Yes | 37.766000 | -120.828000 | Certain | cattails (Typha spp.) | |
| Yolo | East of Madison | Yes | 38.678200 | -121.954300 | Certain | Himalayan blackberry (Rubus armeniacus) | milk thistle (Silybum marianum) |
| Sacramento | East of Sunrise | No | 38.503000 | -121.244000 | Certain | other (note in Comments) | |
| Colusa | East Park Reservoir | Yes | 39.341201 | -122.509232 | Certain | cattails (Typha spp.) | |
| Colusa | East Park Reservoir-West | No | 39.350600 | -122.520000 | Certain | ||
| Colusa | East Park Reservoir: Chisolm Cove | No | 39.312700 | -122.490300 | Certain | cattails (Typha spp.) | |
| Colusa | East Park Reservoir: Stony Creek | No | 39.301310 | -122.489400 | Certain | cattails (Typha spp.) | |
| Stanislaus | East Patterson | Yes | 37.474000 | -121.085000 | Uncertain | bulrush or tule (Schoenoplectus spp.) | |
| Stanislaus | East Patterson #2 | Yes | 37.474000 | -121.081000 | Uncertain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| San Diego | East Santee | Yes | 32.845000 | -116.976000 | Uncertain | cattails (Typha spp.) | bulrush or tule (Schoenoplectus spp.) |
| Merced | East Snelling | Yes | 37.519000 | -120.422000 | Uncertain | cattails (Typha spp.) | |
| San Joaquin | East Tracy | Yes | 37.739000 | -121.418000 | Uncertain | cattails (Typha spp.) | |
| Glenn | East Willows | Yes | 39.513800 | -122.181700 | Uncertain | cattails (Typha spp.) | |
| Glenn | East Willows #2 | Yes | 39.514300 | -122.125500 | Uncertain | cattails (Typha spp.) | willows (Salix spp.) |
| Yolo | East Woodland | Yes | 38.677000 | -121.672000 | Uncertain | cattails (Typha spp.) | |
| Mendocino | Eastside Road Potter Valley | Yes | 39.301816 | -123.095178 | Certain | Himalayan blackberry (Rubus armeniacus) |
