BirdAnalyst
BBS Route · California · BCR 33

Kelso Valley Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 137 species recorded across 39 survey years, still active.

137Species 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 →
39Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2024Span
3Observers

Bird Species Found on California Kelso Valley

Top 40 of 137 species by most recent count. Each links to its species trend.

Species recorded on the Kelso Valley 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
European StarlingSturnidae1042024+410%1976
California QuailOdontophoridae51202413×1975
House FinchFringillidae452024-28%1975
Ash-throated FlycatcherTyrannidae332024+129%1975
Tricolored BlackbirdIcteridae292024+157%2015
Mourning DoveColumbidae212024-52%1975
Common RavenCorvidae182024-39%1975
Black-throated SparrowPasserellidae182024-55%1975
Western MeadowlarkIcteridae162024-39%1975
American CrowCorvidae151976-23%1974
California Scrub-JayCorvidae132024+40%1975
California TowheePasserellidae102024+343%1978
Bewick's WrenTroglodytidae102024+177%1975
Rock WrenTroglodytidae92024+375%1976
House SparrowPasseridae92024+600%1992
BushtitAegithalidae82023+10%1976
Red-winged BlackbirdIcteridae82024-16%1984
Western Wood-PeweeTyrannidae72024+133%1975
Brewer's BlackbirdIcteridae72024-27%1975
Mountain ChickadeeParidae52024+100%1975
Northern MockingbirdMimidae52024+280%1984
Tree SwallowHirundinidae52007+400%2002
Steller's JayCorvidae42023+36%1975
Lesser GoldfinchFringillidae42024-50%1976
Black-headed GrosbeakCardinalidae42024+27%1975
Northern Rough-winged SwallowHirundinidae42003+14%1980
Loggerhead ShrikeLaniidae42024-47%1975
Pygmy NuthatchSittidae42024-57%1984
American GoldfinchFringillidae42011+300%2004
Mountain QuailOdontophoridae32024-70%1975
Acorn WoodpeckerPicidae32024+100%1975
Western KingbirdTyrannidae32024-30%1975
Bullock's OrioleIcteridae32024+0%1975
Lazuli BuntingCardinalidae32024-50%1991
Yellow WarblerParulidae32018+175%1995
Nuttall's WoodpeckerPicidae32024-13%1976
Red-breasted NuthatchSittidae32019+40%1990
Cassin's FinchFringillidae32022+17%1980
Say's PhoebeTyrannidae32024+175%1989
Dusky FlycatcherTyrannidae32019+100%1994

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