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BBS Route · California · BCR 5

Martins Fy Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 86 species recorded across 24 survey years, still active.

86Species 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 →
24Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1976–2009Span
9Observers

Bird Species Found on California Martins Fy

Top 40 of 86 species by most recent count. Each links to its species trend.

Species recorded on the Martins Fy 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
Hermit WarblerParulidae462009+688%1978
Lazuli BuntingCardinalidae372009+239%1978
Hermit ThrushTurdidae332009+9%1978
Steller's JayCorvidae242009-43%1978
Black-throated Gray WarblerParulidae212009+239%1981
Cassin's VireoVireonidae172009+600%1978
Chipping SparrowPasserellidae152009-47%1978
MacGillivray's WarblerParulidae152009+42%1978
Brewer's BlackbirdIcteridae151997+217%1980
Black-headed GrosbeakCardinalidae132009+83%1978
White-crowned SparrowPasserellidae112009-64%1978
Hutton's VireoVireonidae112009+188%1979
Western MeadowlarkIcteridae102009-85%1978
Orange-crowned WarblerParulidae102009+180%1979
Common RavenCorvidae92009+46%1978
Lesser GoldfinchFringillidae92009-39%1978
Western TanagerCardinalidae92009+0%1978
Red-breasted NuthatchSittidae92009+50%1979
Song SparrowPasserellidae92009+43%1979
European StarlingSturnidae82009-24%1978
Warbling VireoVireonidae82009-17%1980
Northern Rough-winged SwallowHirundinidae82006+220%1989
Vaux's SwiftApodidae72008+82%1980
Golden-crowned KingletRegulidae62009+0%1979
Mountain QuailOdontophoridae62009-62%1979
KilldeerCharadriidae51976n/an/a
Band-tailed PigeonColumbidae52009-59%1978
Spotted TowheePasserellidae52009-81%1978
Barn SwallowHirundinidae52009-43%1978
Pine SiskinFringillidae51987+67%1981
Violet-green SwallowHirundinidae51997+400%1984
Acorn WoodpeckerPicidae42009+8%1978
Purple FinchFringillidae42009+117%1981
Western Wood-PeweeTyrannidae42009-9%1984
Fox SparrowPasserellidae41989-75%1988
California QuailOdontophoridae32009-71%1978
Western BluebirdTurdidae31981+150%1978
Grasshopper SparrowPasserellidae32008+167%1988
Nashville WarblerParulidae32009-83%1979
Chestnut-backed ChickadeeParidae32009-45%1979

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