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BBS Route · California · BCR 32

Elsinore Mtn Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 95 species recorded across 16 survey years, still active.

95Species 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 →
16Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2025Span
6Observers

Bird Species Found on California Elsinore Mtn

Top 40 of 95 species by most recent count. Each links to its species trend.

Species recorded on the Elsinore Mtn 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
Spotted TowheePasserellidae1372025+33%1972
WrentitSylviidae1072025-6%1972
California TowheePasserellidae602025+7%1972
European StarlingSturnidae55202514×1972
California ThrasherMimidae542025-15%1972
Lesser GoldfinchFringillidae452025+14%1972
Anna's HummingbirdTrochilidae372025+369%1972
Ash-throated FlycatcherTyrannidae342025+24%1972
California Scrub-JayCorvidae342025-33%1972
House FinchFringillidae332025-37%1972
Acorn WoodpeckerPicidae302025+276%1972
Oak TitmouseParidae282025+206%1972
Blue-gray GnatcatcherPolioptilidae252025+176%2021
Mourning DoveColumbidae242025-41%1972
American CrowCorvidae222025+45%1972
BushtitAegithalidae212025-1%1972
Cliff SwallowHirundinidae202025+178%1995
Rufous-crowned SparrowPasserellidae19202525×1972
Black-headed GrosbeakCardinalidae172025+103%1972
Bewick's WrenTroglodytidae142025+55%1972
MallardAnatidae132022+160%1974
Costa's HummingbirdTrochilidae112025+70%1972
Black-chinned SparrowPasserellidae112025-76%1972
Western MeadowlarkIcteridae101995+46%1972
Orange-crowned WarblerParulidae102024+77%1972
PhainopeplaPtiliogonatidae92025+491%1972
Red-winged BlackbirdIcteridae82025-38%1976
California QuailOdontophoridae72025-79%1972
Nuttall's WoodpeckerPicidae72025+200%1972
Lazuli BuntingCardinalidae72025+533%1972
Violet-green SwallowHirundinidae72025+50%1974
Allen's HummingbirdTrochilidae72025+133%2017
Brewer's BlackbirdIcteridae62025+167%1974
Mountain QuailOdontophoridae62024-81%1975
Band-tailed PigeonColumbidae52025+150%1973
Common RavenCorvidae52025+86%1974
Northern MockingbirdMimidae52025+71%1973
Bullock's OrioleIcteridae52025+240%1973
Hutton's VireoVireonidae52024+88%1976
Horned LarkAlaudidae51975+25%1973

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.