BirdAnalyst
BBS Route · California · BCR 33

Willow Springs 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 39 species recorded across 11 survey years, still active.

39Species 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 →
11Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2013–2024Span
2Observers

Bird Species Found on California Willow Springs 2

Top 39 of 39 species by most recent count. Each links to its species trend.

Species recorded on the Willow Springs 2 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
House SparrowPasseridae722024+24%2015
Rock PigeonColumbidae502024+300%2015
House FinchFringillidae482024+103%2015
Common RavenCorvidae322024+82%2015
Horned LarkAlaudidae162024+49%2015
Bell's SparrowPasserellidae162024-6%2017
Mourning DoveColumbidae142024+78%2015
Hooded OrioleIcteridae102023+550%2016
California QuailOdontophoridae92024+243%2016
Black-throated SparrowPasserellidae82024-37%2015
Northern MockingbirdMimidae62024+50%2015
Ash-throated FlycatcherTyrannidae52024-33%2015
Eurasian Collared-DoveColumbidae52024+38%2015
Lawrence's GoldfinchFringillidae52014n/an/a
Bullock's OrioleIcteridae42018+50%2016
European StarlingSturnidae32024+105%2015
Lark SparrowPasserellidae32024-27%2017
Rock WrenTroglodytidae32023-17%2016
Red-tailed HawkAccipitridae32024+17%2019
Lesser GoldfinchFringillidae32023+200%2017
VerdinRemizidae22024-25%2015
White-throated SwiftApodidae22021-78%2016
KilldeerCharadriidae22023n/an/a
Western KingbirdTyrannidae12024-29%2015
Scott's OrioleIcteridae12024-63%2015
Loggerhead ShrikeLaniidae12024-56%2015
LeConte's ThrasherMimidae12013n/an/a
Cactus WrenTroglodytidae12024-40%2016
Greater RoadrunnerCuculidae12015n/an/a
Lesser NighthawkCaprimulgidae12024-50%2016
Costa's HummingbirdTrochilidae12015n/an/a
Ladder-backed WoodpeckerPicidae12024+0%2016
Say's PhoebeTyrannidae12024-56%2018
Western MeadowlarkIcteridae12024+40%2017
Brewer's BlackbirdIcteridae12017-80%2016
American Barn OwlTytonidae12021n/an/a
Cliff SwallowHirundinidae12021n/an/a
Cooper's HawkAccipitridae12024n/an/a
Anna's HummingbirdTrochilidae12024n/an/a

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