BirdAnalyst
BBS Route · California · BCR 33

Valley Wells Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 43 species recorded across 30 survey years, still active.

43Species 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 →
30Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–2023Span
3Observers

Bird Species Found on California Valley Wells

Top 40 of 43 species by most recent count. Each links to its species trend.

Species recorded on the Valley Wells 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
Black-throated SparrowPasserellidae332023-77%1993
Mourning DoveColumbidae222023-56%1993
Ash-throated FlycatcherTyrannidae142023-38%1993
Loggerhead ShrikeLaniidae92023+6%1993
Common RavenCorvidae82023+10%1994
Cactus WrenTroglodytidae72019-39%1993
PhainopeplaPtiliogonatidae62023+157%2004
LeConte's ThrasherMimidae52023-55%1993
Northern MockingbirdMimidae42023-67%1995
Gambel's QuailOdontophoridae32023-60%1994
Black-tailed GnatcatcherPolioptilidae32019+63%1994
Turkey VultureCathartidae32023-69%2002
House SparrowPasseridae32010-65%2008
European StarlingSturnidae31996n/an/a
Say's PhoebeTyrannidae22021-33%1993
Scott's OrioleIcteridae22022-73%1993
House FinchFringillidae22023-63%1993
Bewick's WrenTroglodytidae22015+0%1994
Costa's HummingbirdTrochilidae22019-33%1994
Blue-gray GnatcatcherPolioptilidae22017+20%1996
Brown-headed CowbirdIcteridae22018-17%1995
Brewer's SparrowPasserellidae22003+67%1995
Rock WrenTroglodytidae22023+0%2001
American CrowCorvidae22008+100%2000
Bullock's OrioleIcteridae22011+100%2002
Lesser NighthawkCaprimulgidae22017+40%2008
Red-tailed HawkAccipitridae12023+0%1993
Greater RoadrunnerCuculidae12011-29%1995
Ladder-backed WoodpeckerPicidae12022-38%1995
Western KingbirdTyrannidae12023-80%1993
Horned LarkAlaudidae12023-58%1994
American KestrelFalconidae12023-60%1994
White-throated SwiftApodidae12014+0%1989
VerdinRemizidae12023-77%1994
Crissal ThrasherMimidae12006-25%1995
Bendire's ThrasherMimidae12023-33%2005
Gray FlycatcherTyrannidae12011+0%2002
OspreyPandionidae12010n/an/a
Lesser GoldfinchFringillidae12023-50%2010
Eurasian Collared-DoveColumbidae12013+0%2010

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