BirdAnalyst
BBS Route · California · BCR 32

Tres Pinos Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 107 species recorded across 26 survey years, no longer active.

107Species 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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2003Span
6Observers

Bird Species Found on California Tres Pinos

Top 40 of 107 species by most recent count. Each links to its species trend.

Species recorded on the Tres Pinos 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
Red-winged BlackbirdIcteridae2662003+156%1972
Brewer's BlackbirdIcteridae1192003-36%1972
House FinchFringillidae1102003-73%1972
Mourning DoveColumbidae432003-18%1972
Cliff SwallowHirundinidae372003-37%1972
California Scrub-JayCorvidae292003+0%1972
Western KingbirdTyrannidae262003+288%1972
Common RavenCorvidae242003+757%1988
Acorn WoodpeckerPicidae232003-41%1972
European StarlingSturnidae232003+84%1972
Tricolored BlackbirdIcteridae202001130×1972
Lesser GoldfinchFringillidae202003+124%1972
Turkey VultureCathartidae192002+300%1977
Bewick's WrenTroglodytidae192003+300%1973
Oak TitmouseParidae182003+83%1972
Ash-throated FlycatcherTyrannidae172003+382%1980
Nuttall's WoodpeckerPicidae162003+80%1974
Band-tailed PigeonColumbidae152001n/an/a
California QuailOdontophoridae122003-55%1972
American CrowCorvidae122003+9%1972
Anna's HummingbirdTrochilidae112003+36%1972
Yellow-billed MagpieCorvidae112003-43%1972
White-breasted NuthatchSittidae112003+433%1972
Bullock's OrioleIcteridae102003-17%1972
Spotted TowheePasserellidae102003+31%1972
California TowheePasserellidae102003+19%1972
American GoldfinchFringillidae101996+60%1994
Western BluebirdTurdidae82003-47%1973
Barn SwallowHirundinidae82003+280%1973
Black PhoebeTyrannidae72003+143%1974
Lawrence's GoldfinchFringillidae72001+9%1980
Northern MockingbirdMimidae62003+32%1972
Red-tailed HawkAccipitridae52003+140%1972
American KestrelFalconidae52003-68%1973
Yellow WarblerParulidae51982+100%1971
BushtitAegithalidae52003-54%1974
Vesper SparrowPasserellidae51973n/an/a
Chipping SparrowPasserellidae51994+150%1975
KilldeerCharadriidae42003+88%1972
Western Wood-PeweeTyrannidae42003+180%1974

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