BirdAnalyst
BBS Route · California · BCR 33

Blythe Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 54 species recorded across 6 survey years, still active.

54Species 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 →
6Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2003Span
5Observers

Bird Species Found on California Blythe

Top 40 of 54 species by most recent count. Each links to its species trend.

Species recorded on the Blythe 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 GrackleIcteridae542003n/an/a
Yellow-headed BlackbirdIcteridae511979+40%1974
Lesser GoldfinchFringillidae27200314×1977
White-winged DoveColumbidae242003+78%1976
Mourning DoveColumbidae222003+48%1976
Western KingbirdTyrannidae202003+250%1976
Barn SwallowHirundinidae201979+567%1974
Red-winged BlackbirdIcteridae172003-49%1976
Loggerhead ShrikeLaniidae171979+343%1974
Cliff SwallowHirundinidae16197916×1977
Rock PigeonColumbidae151977+650%1973
Turkey VultureCathartidae152003+325%1974
Northern Rough-winged SwallowHirundinidae141979+147%1974
Black-tailed GnatcatcherPolioptilidae82003+171%1976
Horned LarkAlaudidae81979+700%1974
Black-throated SparrowPasserellidae61979-71%1974
KilldeerCharadriidae52003+400%1973
European StarlingSturnidae52003-2%1976
Western Wood-PeweeTyrannidae51974n/an/a
White-throated SwiftApodidae51979n/an/a
Common YellowthroatParulidae41979+100%1976
Abert's TowheePasserellidae41979n/an/a
House FinchFringillidae32003-15%1974
LeConte's ThrasherMimidae31973n/an/a
VerdinRemizidae32003+53%1976
Costa's HummingbirdTrochilidae31979+200%1974
American CootRallidae21976+100%1973
Gambel's QuailOdontophoridae22003+54%1976
Bullock's OrioleIcteridae22003-17%1977
House SparrowPasseridae22003+25%1976
Northern MockingbirdMimidae22003-54%1976
Red-tailed HawkAccipitridae21979+50%1976
Say's PhoebeTyrannidae22003+0%1977
Greater RoadrunnerCuculidae22003+200%1977
Common GallinuleRallidae21977n/an/a
Brown-headed CowbirdIcteridae21979-71%1977
Lark SparrowPasserellidae21979+0%1977
Cactus WrenTroglodytidae21979-80%1977
Black-chinned HummingbirdTrochilidae21979n/an/a
Great Blue HeronArdeidae22003n/an/a

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