BirdAnalyst
BBS Route · California · BCR 32

El Toro Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 94 species recorded across 17 survey years, no longer active.

94Species 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 →
17Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–1999Span
4Observers

Bird Species Found on California El Toro

Top 40 of 94 species by most recent count. Each links to its species trend.

Species recorded on the El Toro 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 FinchFringillidae881999+21%1975
American CrowCorvidae551999+176%1975
Rock PigeonColumbidae391999+180%1975
Mourning DoveColumbidae391999+18%1975
European StarlingSturnidae371999-35%1975
Northern House WrenTroglodytidae321999+900%1975
House SparrowPasseridae281999+20%1975
Tricolored BlackbirdIcteridae251973n/an/a
Tree SwallowHirundinidae231984+108%1979
Northern Rough-winged SwallowHirundinidae231999+600%1979
Spotted TowheePasserellidae211999+110%1975
California TowheePasserellidae201999-43%1975
Northern MockingbirdMimidae181999+169%1975
Brewer's BlackbirdIcteridae171999-41%1975
Cliff SwallowHirundinidae171999-84%1975
WrentitSylviidae171999+192%1975
Ash-throated FlycatcherTyrannidae151999+543%1975
Horned LarkAlaudidae151987+100%1975
White-throated SwiftApodidae151999+100%1996
California Scrub-JayCorvidae141999+87%1975
Common RavenCorvidae131999-38%1975
Song SparrowPasserellidae131999-19%1975
Black PhoebeTyrannidae121999+388%1978
BushtitAegithalidae111999-53%1980
Brown-headed CowbirdIcteridae91997+367%1980
Acorn WoodpeckerPicidae81999-41%1975
Lesser GoldfinchFringillidae81999-8%1977
American RobinTurdidae81999+150%1995
California QuailOdontophoridae61995-50%1975
Anna's HummingbirdTrochilidae61999+69%1975
KilldeerCharadriidae61999+480%1979
MallardAnatidae61999+0%1987
Bullock's OrioleIcteridae51997+33%1977
Oak TitmouseParidae51999-50%1975
Lazuli BuntingCardinalidae51986n/an/a
Bewick's WrenTroglodytidae41999+200%1978
Red-shouldered HawkAccipitridae31999+14%1977
Western MeadowlarkIcteridae31996-77%1975
Black-headed GrosbeakCardinalidae31987+133%1975
Chipping SparrowPasserellidae31977n/an/a

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