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BBS Route · California · BCR 15

Cottage Spgs Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 80 species recorded across 8 survey years, no longer active.

80Species 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 →
8Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–1975Span
4Observers

Bird Species Found on California Cottage Spgs

Top 40 of 80 species by most recent count. Each links to its species trend.

Species recorded on the Cottage Spgs 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
American RobinTurdidae611975-38%1970
Western Wood-PeweeTyrannidae361975-8%1970
Olive-sided FlycatcherTyrannidae251975+27%1970
Steller's JayCorvidae241975+35%1970
Brewer's BlackbirdIcteridae201975-12%1970
Fox SparrowPasserellidae201975+186%1968
Mountain ChickadeeParidae181975+132%1970
MacGillivray's WarblerParulidae171975+867%1971
Mountain QuailOdontophoridae151975+33%1969
Band-tailed PigeonColumbidae151969n/an/a
Acorn WoodpeckerPicidae141975-38%1970
Spotted TowheePasserellidae131975-46%1970
Warbling VireoVireonidae111968n/an/a
European StarlingSturnidae101975+133%1969
Cliff SwallowHirundinidae101975-70%1970
Bewick's WrenTroglodytidae101974+57%1969
Red-breasted NuthatchSittidae91975+7%1970
Purple FinchFringillidae81970-39%1968
Chipping SparrowPasserellidae81975-32%1970
Western TanagerCardinalidae81975-44%1970
Barn SwallowHirundinidae81975+38%1970
Northern House WrenTroglodytidae71969n/an/a
House SparrowPasseridae61975-13%1969
Green-tailed TowheePasserellidae51968n/an/a
Hermit WarblerParulidae51975+75%1971
White-breasted NuthatchSittidae51975-56%1970
WrentitSylviidae51975+0%1969
California QuailOdontophoridae51975-50%1970
Mourning DoveColumbidae41975+20%1970
Lesser GoldfinchFringillidae41974-24%1971
BushtitAegithalidae41975+120%1970
White-headed WoodpeckerPicidae41975-25%1972
Nuttall's WoodpeckerPicidae41970n/an/a
California Scrub-JayCorvidae31975-30%1970
White-crowned SparrowPasserellidae31968n/an/a
California TowheePasserellidae31972-20%1969
Black-headed GrosbeakCardinalidae31975-44%1970
Cassin's VireoVireonidae31975-70%1968
Golden-crowned KingletRegulidae31975+200%1968
Lawrence's GoldfinchFringillidae31969n/an/a

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