BirdAnalyst
BBS Route · California · BCR 32

Lake Berryessa Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 68 species recorded across 3 survey years, still active.

68Species 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 →
3Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2023–2025Span
1Observers

Bird Species Found on California Lake Berryessa

Top 40 of 68 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
Cliff SwallowHirundinidae1082025+112%2023
Acorn WoodpeckerPicidae992025+60%2023
California QuailOdontophoridae922025-9%2023
California Scrub-JayCorvidae552025+49%2023
European StarlingSturnidae532025+194%2023
Red-winged BlackbirdIcteridae482025+153%2023
Canada GooseAnatidae452025+67%2023
Mourning DoveColumbidae452025-4%2023
WrentitSylviidae372025+76%2023
Spotted TowheePasserellidae342025+89%2023
Ash-throated FlycatcherTyrannidae332025-8%2023
Oak TitmouseParidae322025+167%2023
Brewer's BlackbirdIcteridae292025+164%2023
California TowheePasserellidae222025+47%2023
House FinchFringillidae182025-42%2023
Song SparrowPasserellidae172025+113%2023
Bewick's WrenTroglodytidae152025-29%2023
Western MeadowlarkIcteridae132025-50%2023
Nuttall's WoodpeckerPicidae122025+20%2023
Turkey VultureCathartidae102025-23%2023
Northern House WrenTroglodytidae102025-44%2023
Bullock's OrioleIcteridae82025+14%2023
Western KingbirdTyrannidae72025-22%2023
Black PhoebeTyrannidae72025+17%2023
Western Wood-PeweeTyrannidae72025-42%2023
Common RavenCorvidae72025-30%2023
Black-headed GrosbeakCardinalidae72025+0%2023
Red-tailed HawkAccipitridae62025+100%2023
Violet-green SwallowHirundinidae62025-14%2023
White-breasted NuthatchSittidae62025+0%2023
Mountain QuailOdontophoridae52023n/an/a
Orange-crowned WarblerParulidae52024-44%2023
Bell's SparrowPasserellidae42025+300%2024
Tree SwallowHirundinidae42024n/an/a
Clark's GrebePodicipedidae32025-67%2023
KilldeerCharadriidae32025+200%2023
American KestrelFalconidae32025+50%2023
Anna's HummingbirdTrochilidae32025-79%2023
Lesser GoldfinchFringillidae32025+50%2023
Northern Rough-winged SwallowHirundinidae32025+50%2023

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.