BirdAnalyst
BBS Route · California · BCR 33

Brawley Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 70 species recorded across 31 survey years, still active.

70Species 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 →
31Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1971–2012Span
4Observers

Bird Species Found on California Brawley

Top 40 of 70 species by most recent count. Each links to its species trend.

Species recorded on the Brawley 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
Red-winged BlackbirdIcteridae14432012+11%1973
Western Cattle-EgretArdeidae240201212×1974
White-faced IbisThreskiornithidae2052012+303%1991
Great-tailed GrackleIcteridae91201216×1986
European StarlingSturnidae502010+8%1973
Cliff SwallowHirundinidae482012+236%1983
Northern Rough-winged SwallowHirundinidae482010-60%1973
Ring-billed GullLaridae432009+221%1975
Western MeadowlarkIcteridae302012+378%1973
Burrowing OwlStrigidae292012+302%1973
White-winged DoveColumbidae262012+523%1983
Rock PigeonColumbidae24201215×1984
Yellow-headed BlackbirdIcteridae202010+114%1973
Eurasian Collared-DoveColumbidae182012+41%2008
Mourning DoveColumbidae152012-65%1973
Brown PelicanPelecanidae152006n/an/a
Great EgretArdeidae132012+327%1989
Western KingbirdTyrannidae122012+46%1973
Horned LarkAlaudidae102012-36%1974
MallardAnatidae102012-14%2008
Abert's TowheePasserellidae92001+200%1984
Black-necked StiltRecurvirostridae82010+111%1974
KilldeerCharadriidae62012+25%1983
House SparrowPasseridae42012-95%1973
Brown-headed CowbirdIcteridae42009+100%1975
Song SparrowPasserellidae42012-20%1991
Greater RoadrunnerCuculidae32010-33%1973
House FinchFringillidae32010+187%1976
Snowy EgretArdeidae32010+867%1989
Ring-necked PheasantPhasianidae32012+350%1984
Northern HarrierAccipitridae32009+133%1995
Black PhoebeTyrannidae32012+557%1986
Gambel's QuailOdontophoridae22010-13%1975
Western Wood-PeweeTyrannidae21971n/an/a
Fulvous Whistling-DuckAnatidae21988-33%1972
American KestrelFalconidae22012+33%1975
American CootRallidae22007+100%1976
Brewer's BlackbirdIcteridae22009+0%1977
Double-crested CormorantPhalacrocoracidae22012-86%1997
Barn SwallowHirundinidae22010+100%2006

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