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BBS Route · California · BCR 15

Paxton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 115 species recorded across 22 survey years, still active.

115Species 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 →
22Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2024Span
3Observers

Bird Species Found on California Paxton

Top 40 of 115 species by most recent count. Each links to its species trend.

Species recorded on the Paxton 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 SwallowHirundinidae2152024-26%2001
Red-winged BlackbirdIcteridae1742024+31%2001
American RobinTurdidae452024+6%2001
European StarlingSturnidae372024+106%2001
Western MeadowlarkIcteridae362024+22%2001
Western Wood-PeweeTyrannidae332024+17%2001
Lazuli BuntingCardinalidae302024+610%2001
Black-headed GrosbeakCardinalidae222024+33%2001
Mourning DoveColumbidae192024+80%2001
American CrowCorvidae182024+73%2001
Brewer's BlackbirdIcteridae152024-59%2001
Spotted TowheePasserellidae152024+10%2001
Steller's JayCorvidae132024-41%2001
Song SparrowPasserellidae132024-40%2001
Yellow WarblerParulidae112024+21%2001
Eurasian Collared-DoveColumbidae112024+271%2014
Northern House WrenTroglodytidae102024+33%2001
Canada GooseAnatidae102024+52%2003
Bullock's OrioleIcteridae92024+29%2001
Rock PigeonColumbidae82022-45%2007
BushtitAegithalidae82024+100%2016
MallardAnatidae72024+133%2001
Tree SwallowHirundinidae72024-67%2001
Western TanagerCardinalidae62024-86%2001
Violet-green SwallowHirundinidae62024+175%2003
Wild TurkeyPhasianidae62014+233%2011
Western KingbirdTyrannidae52024+25%2008
Lesser GoldfinchFringillidae52024-27%2001
Sandhill CraneGruidae52024+0%2004
Bank SwallowHirundinidae52024-39%2003
Yellow-headed BlackbirdIcteridae52010+400%2004
House FinchFringillidae52012+400%2007
Turkey VultureCathartidae52024+6%2010
Black-billed MagpieCorvidae42024-26%2001
Warbling VireoVireonidae42024-24%2001
Cassin's VireoVireonidae42024-57%2001
Mountain ChickadeeParidae42024+17%2001
Black PhoebeTyrannidae42024+14%2007
Bewick's WrenTroglodytidae42018+150%2009
California QuailOdontophoridae32024-62%2001

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