Observer Roster
The Regional Observation Periods for 2023
March 3–5 (Friday–Sunday)
March 18–20 (Saturday–Monday)
Mar 31–Apr 2 (Friday–Sunday)
May 6–May 8 (Saturday–Monday)
June 2–4 (Friday–Sunday)
June 17–19 (Saturday–Monday)
For more information:
Emiko Condeso
Ecologist/GIS Specialist
Cypress Grove Research Center
List of Volunteer Site Coordinators and Observers
2023 Season
Last update: 2/6/23
The observer in bold is the Site Coordinator. Please check for your name and let Emiko know ASAP if you have concerns about your assignment. Note that only sites with volunteer observers are listed below. For a complete picture of the sites we monitor, see the Map of the Heronries.
Site Name (Site Number) |
County |
Observers |
| Alcatraz Island (70) | San Francisco | |
| Bel Marin Keys (128) | Marin | |
| Bel Canyon Reservoir (3) | Napa | |
| Benicia Bridge (177) | Contra Costa | Judith Dunham, Elizabeth Sojourner |
| Berryessa Pines (168) | Napa | |
| Berryessa Resort (175) and other historical sites | Napa | |
| Bodega Bay Flat Road (5) | Marin | |
| Campbell Ranch northwest (8), Campbell Ranch southeast (8.1) | Solano | |
| Chalk Hill Road (9) | Sonoma | Conner Cimmiyotti |
| Chiles Creek north (63.1) | Napa | Nancy Abreu |
| Cloverdale, River Road (11.2) | Sonoma | |
| Congress Valley (68.1), and Congress Valley old site (68) | Napa | Emiko Condeso, Camrie Mills, Kathleen Mugele, Iris Lombard, Mary Rooney |
| Cypress Road (160), Cypress Road South (160.1) | Marin | Barbara Wechsberg, Ron Mallory |
| Delta Pond sites (90 and 90.1) | Sonoma | |
| DeSilva Island (15) | Marin | Sasha Vitomski |
| Dover Park (162) | Solano | |
| Drakes Estero (94) | Marin | Scott Jennings |
| Fitch Mountain North (31.1) | Sonoma | |
| Freezeout Road (16) | Sonoma | Scott Jennings, Jacob Benning |
| Gold Hill (29) | Solano | Tom Slyker, Cheryl Reynolds |
| Hagen Road (30), Hagen Road West (184) | Napa | Penny Proteau, Wendy Cole |
| Keel Court (179) | Marin | Luanna Helfman |
| Lake Herman (154) | Solano | Wally Neville |
| Lake Nicasio (47), Lake Nicasio North (47.1), Lake Nicasio Pond (186) | Marin | Ann Linder, Bob Battagin |
| Lake Hennessey Inlet (190) | Napa | |
| Mare Island Sites (73, 73.2, 73.3, 73.4, 73.5, 73.6, 73.7, 73.8, 135, 161) |
Solano | Wally Neville, Robin Leong |
| Oddfellows (145) | Sonoma | Lucy Kenyon |
| Olive Hill Lane (183) | Napa | Penny Proteau, Wendy Cole |
| Petaluma Wastewater Plant (40) | Sonoma | Len Nelson, Linda Sheppard |
| Pope Valley 2 (89) | Napa | |
| Raccoon Straits (117), Raccoon Straits Ridge (117.1) | Marin | Patti Blumin, Sylvie Silverstein |
| Riverfront Park (110) | Sonoma | |
| Sand Point Sites (50, 50.1, 50.2, 50.3) | Marin | Ellen Blustein |
| San Pablo Dam east (51), San Pablo Dam west and north (51.1) | Contra Costa | Phoebe Tanner, Julie Roemer, Lorna Cogen |
| Seminary (149) | Marin | |
| Shuey Drive (176) | Contra Costa | Judith Dunham |
| Skaggs Island Eucalyptus (116), Skaggs Island sewage pond (112) | Napa | |
| South Kelly (129) | Napa | Tom Slyker, Claudia Zinn |
| Tree Farm (137) | Marin | |
| Via Palo Linda (107.1) | Solano | |
| W. 9th Street, Santa Rosa | Sonoma | David Lumpkin |
| Willota Drive (146) and Willota Drive North (146.1) | Solano |
The latest at Audubon Canyon Ranch
February 13, 2023 08:30 am
to 12:00 pm
Bouverie Preserve
February 11, 2023 01:00 pm
to 3:30 pm
Martin Griffin Preserve