BirdAnalyst
BBS Route · California · BCR 32

Lake Berryessa Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 62 species recorded across 2 survey years, still active.

62Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
2Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2023–2024Span
1Observers

Bird Species Found on California Lake Berryessa

Top 40 of 62 species by most recent count. Each links to its species trend.

Species recorded on the Lake Berryessa route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
California QuailOdontophoridae802024-21%2023
Acorn WoodpeckerPicidae622024+0%2023
Mourning DoveColumbidae522024+11%2023
Cliff SwallowHirundinidae382024-26%2023
Oak TitmouseParidae342024+183%2023
California Scrub-JayCorvidae332024-11%2023
Ash-throated FlycatcherTyrannidae322024-11%2023
Turkey VultureCathartidae262024+100%2023
WrentitSylviidae262024+24%2023
European StarlingSturnidae232024+28%2023
Western MeadowlarkIcteridae232024-12%2023
Bewick's WrenTroglodytidae192024-10%2023
White-breasted NuthatchSittidae192024+217%2023
Nuttall's WoodpeckerPicidae162024+60%2023
Spotted TowheePasserellidae162024-11%2023
House FinchFringillidae152024-52%2023
Common RavenCorvidae142024+40%2023
Northern House WrenTroglodytidae142024-22%2023
Red-tailed HawkAccipitridae132024+333%2023
California TowheePasserellidae132024-13%2023
Canada GooseAnatidae92024-67%2023
Western Wood-PeweeTyrannidae92024-25%2023
Violet-green SwallowHirundinidae92024+29%2023
Song SparrowPasserellidae82024+0%2023
Black PhoebeTyrannidae72024+17%2023
Brewer's BlackbirdIcteridae72024-36%2023
Bullock's OrioleIcteridae62024-14%2023
Mountain QuailOdontophoridae52023n/an/a
Western KingbirdTyrannidae52024-44%2023
American CrowCorvidae52024+400%2023
Red-winged BlackbirdIcteridae52024-74%2023
Black-headed GrosbeakCardinalidae52024-29%2023
Orange-crowned WarblerParulidae52024-44%2023
Clark's GrebePodicipedidae42024-56%2023
American KestrelFalconidae42024+100%2023
Anna's HummingbirdTrochilidae42024-71%2023
Tree SwallowHirundinidae42024n/an/a
Great Blue HeronArdeidae32024+200%2023
Lesser GoldfinchFringillidae32024+50%2023
California ThrasherMimidae32024-40%2023

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.