BirdAnalyst
BBS Route · California · BCR 33

Iron Mtns Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 28 species recorded across 17 survey years, no longer active.

28Species 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 →
17Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2000–2021Span
2Observers

Bird Species Found on California Iron Mtns

Top 28 of 28 species by most recent count. Each links to its species trend.

Species recorded on the Iron Mtns 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
Gambel's QuailOdontophoridae15201415×2006
Horned LarkAlaudidae142019+0%2006
VerdinRemizidae82018+250%2006
Black-tailed GnatcatcherPolioptilidae42018+0%2005
Turkey VultureCathartidae42021+240%2008
PhainopeplaPtiliogonatidae42013+25%2011
LeConte's ThrasherMimidae42017n/an/a
Common RavenCorvidae32021+250%2007
Costa's HummingbirdTrochilidae32011+200%2009
White-throated SwiftApodidae32018n/an/a
Mourning DoveColumbidae22019+33%2006
Black-throated SparrowPasserellidae22021-84%2006
Cactus WrenTroglodytidae22013-33%2000
Red-tailed HawkAccipitridae12017+0%2009
Ash-throated FlycatcherTyrannidae12018-25%2007
Say's PhoebeTyrannidae12019-50%2006
Loggerhead ShrikeLaniidae12021-54%2006
Western KingbirdTyrannidae12018+0%2006
Eurasian Collared-DoveColumbidae12017+0%2008
Northern MockingbirdMimidae12018+0%2009
Prairie FalconFalconidae12018-40%2012
House FinchFringillidae12018-75%2010
American KestrelFalconidae12012n/an/a
Greater RoadrunnerCuculidae12013n/an/a
Lesser NighthawkCaprimulgidae12013n/an/a
White-winged DoveColumbidae12018n/an/a
Black PhoebeTyrannidae12018n/an/a
Northern Rough-winged SwallowHirundinidae12018n/an/a

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