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BBS Route · California · BCR 32

Big Bear Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 115 species recorded across 15 survey years, no longer active.

115Species 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 →
15Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–1986Span
3Observers

Bird Species Found on California Big Bear

Top 40 of 115 species by most recent count. Each links to its species trend.

Species recorded on the Big Bear 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
Violet-green SwallowHirundinidae821986-37%1971
Brewer's BlackbirdIcteridae671986-2%1971
Eared GrebePodicipedidae631986+407%1973
Cliff SwallowHirundinidae621986+18%1971
Green-tailed TowheePasserellidae401986-6%1971
Pygmy NuthatchSittidae371986+59%1971
Steller's JayCorvidae311986-3%1971
Spotted TowheePasserellidae281986+6%1971
Mountain ChickadeeParidae281986+40%1971
Pine SiskinFringillidae251981+483%1974
RedheadAnatidae201981+900%1971
Clark's NutcrackerCorvidae191986-73%1971
Brown-headed CowbirdIcteridae191986-10%1971
American RobinTurdidae181986+57%1971
American CootRallidae161986+73%1971
Western Wood-PeweeTyrannidae151986+2%1971
Red-winged BlackbirdIcteridae151982-29%1971
House FinchFringillidae141986-69%1971
Black-chinned SparrowPasserellidae141986-64%1971
Western BluebirdTurdidae121986-18%1971
California Scrub-JayCorvidae111986+32%1971
GadwallAnatidae111986+112%1981
Ash-throated FlycatcherTyrannidae101986-18%1974
Cassin's FinchFringillidae91986-57%1971
American AvocetRecurvirostridae91973n/an/a
Chipping SparrowPasserellidae81986-59%1971
Calliope HummingbirdTrochilidae71981+29%1974
Western MeadowlarkIcteridae71986-55%1971
Brewer's SparrowPasserellidae71986+0%1971
Mountain QuailOdontophoridae61982+15%1973
Red CrossbillFringillidae61969n/an/a
White-breasted NuthatchSittidae61986+50%1972
Red-tailed HawkAccipitridae61986+10%1972
Western TanagerCardinalidae51986-36%1971
Lesser GoldfinchFringillidae51986-17%1977
Anna's HummingbirdTrochilidae41986+0%1981
Scott's OrioleIcteridae41986-42%1971
Lawrence's GoldfinchFringillidae41975+300%1969
Brown CreeperCerthiidae41983+233%1975
Band-tailed PigeonColumbidae41983+33%1973

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