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BBS Route · California · BCR 15

Higgins Corn Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 98 species recorded across 46 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 →
46Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2025Span
7Observers

Bird Species Found on California Higgins Corn

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

Species recorded on the Higgins Corn 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
Spotted TowheePasserellidae422025+39%1975
House FinchFringillidae322025+553%1975
Common RavenCorvidae312025+960%2004
Acorn WoodpeckerPicidae222025+9%1975
Rock PigeonColumbidae202025+73%1978
Mourning DoveColumbidae192025+27%1975
Lesser GoldfinchFringillidae172025+788%1976
American RobinTurdidae142025-43%1975
California TowheePasserellidae132025+340%1975
Brewer's BlackbirdIcteridae122025-20%1975
Orange-crowned WarblerParulidae122025+660%1975
Canada GooseAnatidae122024+125%2019
White-breasted NuthatchSittidae112025+36%1981
Black-headed GrosbeakCardinalidae92025-54%1975
Warbling VireoVireonidae92021+300%1976
Western BluebirdTurdidae92025+33%1976
California Scrub-JayCorvidae82025+20%1975
Western TanagerCardinalidae72024-33%1975
Oak TitmouseParidae72025+336%1978
California QuailOdontophoridae62025-52%1975
Western Wood-PeweeTyrannidae62025-80%1975
European StarlingSturnidae52025-17%1976
Steller's JayCorvidae52025+114%1977
Ash-throated FlycatcherTyrannidae42025+117%1975
WrentitSylviidae42025-6%1975
Northern MockingbirdMimidae42023+133%1983
Western Screech-OwlStrigidae41997+300%1995
Chestnut-backed ChickadeeParidae42024+100%2014
Olive-sided FlycatcherTyrannidae32023-77%1975
Lark SparrowPasserellidae32002-14%1977
Brown CreeperCerthiidae32024+0%1975
Black PhoebeTyrannidae32025+300%1977
Red-breasted NuthatchSittidae32025-33%1976
Hairy WoodpeckerPicidae32025+100%1991
MacGillivray's WarblerParulidae31982n/an/a
Nuttall's WoodpeckerPicidae32025-46%1985
Red-shouldered HawkAccipitridae32025+67%2000
Blue GrosbeakCardinalidae32018n/an/a
Red-winged BlackbirdIcteridae22025+250%1975
House SparrowPasseridae22025-23%1975

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