BirdAnalyst
BBS Route · California · BCR 32

Oroville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 98 species recorded across 43 survey years, still active.

98Species 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 →
43Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2025Span
5Observers

Bird Species Found on California Oroville

Top 40 of 98 species by most recent count. Each links to its species trend.

Species recorded on the Oroville 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 FinchFringillidae2072025+130%1974
Tricolored BlackbirdIcteridae802012+209%1982
House SparrowPasseridae732025+118%1974
American CrowCorvidae552025+202%1974
American RobinTurdidae402025+174%1974
Mourning DoveColumbidae382025-37%1974
European StarlingSturnidae35202511×1974
White-faced IbisThreskiornithidae352013n/an/a
Western KingbirdTyrannidae342025+171%1974
Tree SwallowHirundinidae31202515×1977
Northern MockingbirdMimidae302025+145%1974
Forster's TernLaridae302013+258%1981
American GoldfinchFringillidae282025+319%1974
Black-necked StiltRecurvirostridae212025+320%1998
Canada GooseAnatidae202025+219%1993
Lesser GoldfinchFringillidae172025+425%1978
Brewer's BlackbirdIcteridae152025-67%1974
Turkey VultureCathartidae142025+833%1985
Nuttall's WoodpeckerPicidae132025+200%1975
Rock PigeonColumbidae132025+46%1977
Eurasian Collared-DoveColumbidae122025+95%2011
California Scrub-JayCorvidae112025-14%1974
Barn SwallowHirundinidae72025+71%1975
Ash-throated FlycatcherTyrannidae62024+0%1974
Brown-headed CowbirdIcteridae62025-21%1974
Oak TitmouseParidae62025+100%1976
Anna's HummingbirdTrochilidae62025+80%1984
Red-tailed HawkAccipitridae52024+400%1977
Red-winged BlackbirdIcteridae52025+41%1974
Western MeadowlarkIcteridae42024-43%1974
Great EgretArdeidae42025-73%1985
Western BluebirdTurdidae42025+300%1986
Black PhoebeTyrannidae32025+200%1976
Yellow-billed MagpieCorvidae32025-89%1974
California TowheePasserellidae32025-40%1974
Cliff SwallowHirundinidae32025-36%1974
Black-chinned HummingbirdTrochilidae32025+733%1989
Western Wood-PeweeTyrannidae32024+67%1990
Black-crowned Night HeronArdeidae32025-33%1981
Northern House WrenTroglodytidae32024+133%1998

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