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BBS Route · California · BCR 32

Hughson Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 120 species recorded across 56 survey years, still active.

120Species 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 →
56Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2024Span
4Observers

Bird Species Found on California Hughson

Top 40 of 120 species by most recent count. Each links to its species trend.

Species recorded on the Hughson 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
Cliff SwallowHirundinidae6312024+12%1970
Mourning DoveColumbidae4852024+611%1970
House FinchFringillidae1412024+20%1970
European StarlingSturnidae832024+407%1970
House SparrowPasseridae702024-18%1970
Brewer's BlackbirdIcteridae592024-82%1970
Canada GooseAnatidae402024+338%1996
Western KingbirdTyrannidae392024+131%1970
Eurasian Collared-DoveColumbidae372024+218%2010
California Scrub-JayCorvidae33202415×1970
Northern MockingbirdMimidae322024+128%1970
Tricolored BlackbirdIcteridae302024-38%1976
Savannah SparrowPasserellidae301977n/an/a
American RobinTurdidae232024+471%1970
Lesser GoldfinchFringillidae202024+450%1978
Yellow-billed MagpieCorvidae192024+358%1970
Double-crested CormorantPhalacrocoracidae182024+900%2015
Great EgretArdeidae172024+633%1974
Red-tailed HawkAccipitridae172024+757%1970
White-faced IbisThreskiornithidae172024-51%2010
American CrowCorvidae152024+7%1970
Red-winged BlackbirdIcteridae152024-88%1970
Brown-headed CowbirdIcteridae132024+875%1974
Western GrebePodicipedidae132024+5%1990
Turkey VultureCathartidae122024+500%1970
Rock PigeonColumbidae112023+253%1970
KilldeerCharadriidae102024+75%1970
American GoldfinchFringillidae102024+500%1972
Barn SwallowHirundinidae102023-35%1970
Black-necked StiltRecurvirostridae82024+100%1984
Western BluebirdTurdidae82024+157%2001
Great Blue HeronArdeidae72024+0%1971
Bullock's OrioleIcteridae72024+450%1973
Black PhoebeTyrannidae72024+425%1983
American AvocetRecurvirostridae72023+129%1986
Acorn WoodpeckerPicidae52024+433%1973
OspreyPandionidae52024+133%2000
Snowy EgretArdeidae52018n/an/a
Tree SwallowHirundinidae42024+0%1974
Oak TitmouseParidae42019+20%1979

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