BirdAnalyst
BBS Route · California · BCR 32

Poloma Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 84 species recorded across 19 survey years, still active.

84Species 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 →
19Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2024Span
3Observers

Bird Species Found on California Poloma

Top 40 of 84 species by most recent count. Each links to its species trend.

Species recorded on the Poloma 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
Tricolored BlackbirdIcteridae861995+760%1993
House FinchFringillidae412024-54%1995
Mourning DoveColumbidae382024+56%1995
Acorn WoodpeckerPicidae372024+3%1995
Eurasian Collared-DoveColumbidae242024+227%2016
European StarlingSturnidae222024-71%1995
Spotted TowheePasserellidae192024-76%1995
House SparrowPasseridae192024+58%2002
Lesser GoldfinchFringillidae182024-18%1995
California QuailOdontophoridae172024-20%1995
Oak TitmouseParidae172024-72%1995
Red-winged BlackbirdIcteridae162024-25%1995
GadwallAnatidae152013+283%2009
Turkey VultureCathartidae132024+300%2002
Rock PigeonColumbidae122024+411%1995
American RobinTurdidae122024-67%1995
Great Horned OwlStrigidae122023+850%2018
California Scrub-JayCorvidae112024-55%1995
Western BluebirdTurdidae112024-47%1995
Nuttall's WoodpeckerPicidae92024-17%1995
Ash-throated FlycatcherTyrannidae82024-88%1995
Black-headed GrosbeakCardinalidae82024-71%1995
Barn SwallowHirundinidae82024-38%1995
Bewick's WrenTroglodytidae82024-56%1995
American CrowCorvidae82024+144%2009
California TowheePasserellidae72024-79%1995
White-breasted NuthatchSittidae72024-69%1995
MallardAnatidae62024+167%1995
Cliff SwallowHirundinidae62024-75%1995
Orange-crowned WarblerParulidae62024-86%1995
Common RavenCorvidae62024+300%2018
American CootRallidae52023+180%2010
Brewer's BlackbirdIcteridae42024-91%1995
Tree SwallowHirundinidae42021+80%1995
Violet-green SwallowHirundinidae42021+67%2002
BushtitAegithalidae42024+8%1995
Wild TurkeyPhasianidae42024+150%2010
Lawrence's GoldfinchFringillidae42002n/an/a
Brown-headed CowbirdIcteridae32024-95%1995
Northern Rough-winged SwallowHirundinidae31995+200%1993

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