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BBS Route · California · BCR 32

Yokohl Val Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 14 survey years, still active.

96Species 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 →
14Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–1997Span
3Observers

Bird Species Found on California Yokohl Val

Top 40 of 96 species by most recent count. Each links to its species trend.

Species recorded on the Yokohl Val 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
Acorn WoodpeckerPicidae721997+8%1974
Mourning DoveColumbidae511997-43%1974
European StarlingSturnidae501997+135%1975
House FinchFringillidae471997+144%1974
Ash-throated FlycatcherTyrannidae471997+80%1976
Western KingbirdTyrannidae361997+38%1974
Oak TitmouseParidae301997+77%1974
Northern House WrenTroglodytidae291997+43%1976
California QuailOdontophoridae281997-19%1974
Bullock's OrioleIcteridae251997+38%1974
White-breasted NuthatchSittidae231997+161%1975
Brewer's BlackbirdIcteridae211997-43%1974
Lark SparrowPasserellidae211997+333%1975
California TowheePasserellidae201997+29%1974
Brown-headed CowbirdIcteridae181997+180%1976
Lesser GoldfinchFringillidae171997-8%1975
Common RavenCorvidae171997+26%1976
Black-headed GrosbeakCardinalidae151997+217%1975
BushtitAegithalidae141997-15%1974
Western BluebirdTurdidae131997-36%1976
WrentitSylviidae131997+250%1977
Spotted TowheePasserellidae111997+338%1975
Tree SwallowHirundinidae111997+114%1994
California Scrub-JayCorvidae101997+29%1974
Western MeadowlarkIcteridae101997-86%1974
Violet-green SwallowHirundinidae91997-71%1974
White-crowned SparrowPasserellidae71973n/an/a
Red-winged BlackbirdIcteridae51997-39%1975
Cliff SwallowHirundinidae51997-96%1974
Purple FinchFringillidae51996-95%1977
Band-tailed PigeonColumbidae51978+0%1976
Lazuli BuntingCardinalidae51997+125%1978
American KestrelFalconidae41997+46%1975
House SparrowPasseridae41997+157%1975
Western Wood-PeweeTyrannidae41997-59%1977
Black PhoebeTyrannidae31997+43%1974
American RobinTurdidae31997-31%1974
Nashville WarblerParulidae31997+0%1993
Nuttall's WoodpeckerPicidae31997-69%1977
PhainopeplaPtiliogonatidae31997-10%1978

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