BirdAnalyst
BBS Route · California · BCR 33

Palo Verde Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 72 species recorded across 21 survey years, still active.

72Species 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 →
21Years 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
5Observers

Bird Species Found on California Palo Verde

Top 40 of 72 species by most recent count. Each links to its species trend.

Species recorded on the Palo Verde 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 BlackbirdIcteridae7852025-18%1976
White-faced IbisThreskiornithidae1432025-43%2012
European StarlingSturnidae1012025+30%1976
Great-tailed GrackleIcteridae100202571×1977
Cliff SwallowHirundinidae332025+366%1976
Horned LarkAlaudidae332025+203%2009
Western KingbirdTyrannidae282025+79%1976
Mourning DoveColumbidae242025-87%1976
Brown-headed CowbirdIcteridae192025+75%1977
Eurasian Collared-DoveColumbidae122025-29%2011
White-winged DoveColumbidae92025-18%1976
KilldeerCharadriidae82025+380%1977
Gambel's QuailOdontophoridae82025-6%1976
Northern Rough-winged SwallowHirundinidae82025-36%1976
House SparrowPasseridae82025-92%1976
Yellow-headed BlackbirdIcteridae72025-86%1976
Barn SwallowHirundinidae72025+800%2009
Say's PhoebeTyrannidae62025+29%2011
Common RavenCorvidae62025+200%2012
Western MeadowlarkIcteridae52023-11%1976
Common YellowthroatParulidae52025+420%1977
Northern MockingbirdMimidae52025-33%1976
Snowy EgretArdeidae52003+67%1976
PhainopeplaPtiliogonatidae51977n/an/a
Great EgretArdeidae42025+20%1976
House FinchFringillidae42025+90%1976
VerdinRemizidae42025+10%1977
American CootRallidae32025-71%1976
American KestrelFalconidae32025+25%2003
Western Cattle-EgretArdeidae32015-95%1977
Ash-throated FlycatcherTyrannidae32003+200%1977
MallardAnatidae32016+50%2014
Northern PintailAnatidae21973n/an/a
Common Ground DoveColumbidae22012-20%1977
Black-crowned Night HeronArdeidae22013+100%1977
Ladder-backed WoodpeckerPicidae22018+100%1977
Song SparrowPasserellidae22024-71%2009
Northern HarrierAccipitridae22021+50%2014
Rock PigeonColumbidae22025+11%2011
Brewer's BlackbirdIcteridae22022-80%2014

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