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BBS Route · California · BCR 33

Parker Dam Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 51 species recorded across 5 survey years, still active.

51Species 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 →
5Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2007Span
4Observers

Bird Species Found on California Parker Dam

Top 40 of 51 species by most recent count. Each links to its species trend.

Species recorded on the Parker Dam 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
Great-tailed GrackleIcteridae452007+88%2003
Mourning DoveColumbidae362007-5%1975
Red-winged BlackbirdIcteridae302007-89%1975
Brewer's BlackbirdIcteridae222007+178%1978
Yellow-headed BlackbirdIcteridae202007+900%1973
White-winged DoveColumbidae192007-25%1975
Northern Rough-winged SwallowHirundinidae182007-88%1978
White-throated SwiftApodidae162007-39%1975
Gambel's QuailOdontophoridae112007-33%1975
Western KingbirdTyrannidae112007+100%1975
House SparrowPasseridae102007-89%1975
Turkey VultureCathartidae92007+350%1975
MallardAnatidae92007+200%2003
Cliff SwallowHirundinidae81978-98%1973
VerdinRemizidae72007-56%1975
Lesser NighthawkCaprimulgidae62003+100%1973
Abert's TowheePasserellidae62007+200%1973
Northern House WrenTroglodytidae62003+50%1973
Lesser GoldfinchFringillidae62007+100%2003
Brown-headed CowbirdIcteridae52007-55%1975
House FinchFringillidae52007-83%1975
Cactus WrenTroglodytidae31978+0%1975
Loggerhead ShrikeLaniidae21978-71%1973
Common YellowthroatParulidae22007-33%1973
Swainson's HawkAccipitridae21975n/an/a
Northern MockingbirdMimidae22007+100%1975
Black-tailed GnatcatcherPolioptilidae22007+0%1978
Common Ground DoveColumbidae22007+100%2003
Great Blue HeronArdeidae12007+0%1975
Great EgretArdeidae11973n/an/a
Black-crowned Night HeronArdeidae12003-50%1973
American KestrelFalconidae12007-50%1973
Ash-throated FlycatcherTyrannidae12007+75%1975
Common RavenCorvidae12007+200%1975
Marsh WrenTroglodytidae11978-50%1973
Rock PigeonColumbidae11975n/an/a
Greater RoadrunnerCuculidae12007+50%1978
Hooded OrioleIcteridae11975n/an/a
Bullock's OrioleIcteridae12007+0%1975
Cassin's VireoVireonidae11975n/an/a

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