BirdAnalyst
BBS Route · Colorado · BCR 16

Red Cliff Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 80 species recorded across 34 survey years, still active.

80Species 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 →
34Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1989–2024Span
2Observers

Bird Species Found on Colorado Red Cliff

Top 40 of 80 species by most recent count. Each links to its species trend.

Species recorded on the Red Cliff 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
American RobinTurdidae492024+9%1991
Lincoln's SparrowPasserellidae332024-15%1991
Ruby-crowned KingletRegulidae322024-39%1991
White-crowned SparrowPasserellidae262024-41%1991
Song SparrowPasserellidae142024+153%1992
Broad-tailed HummingbirdTrochilidae122024-35%1991
Warbling VireoVireonidae122024-44%1991
Mountain ChickadeeParidae122024-54%1991
Pine SiskinFringillidae112024-72%1991
Violet-green SwallowHirundinidae112024-34%1991
Yellow WarblerParulidae92024-28%1991
Hermit ThrushTurdidae92024-71%1991
Olive-sided FlycatcherTyrannidae62023-68%1991
Canada GooseAnatidae62024-57%2017
Western Wood-PeweeTyrannidae52024-33%1991
Red CrossbillFringillidae52024-85%1991
Fox SparrowPasserellidae52024-18%1991
Western TanagerCardinalidae52024+80%2000
Northern House WrenTroglodytidae52024-10%1991
Steller's JayCorvidae42024+180%1991
Pine GrosbeakFringillidae42024-59%1991
Red-breasted NuthatchSittidae42024-30%1992
Common NighthawkCaprimulgidae41993+0%1990
Red-winged BlackbirdIcteridae42024+20%1994
Chipping SparrowPasserellidae42024+0%1994
Canada JayCorvidae32024+38%1992
Red-tailed HawkAccipitridae32024+67%1997
Dusky FlycatcherTyrannidae22024-57%1991
Evening GrosbeakFringillidae21996+0%1989
Cassin's FinchFringillidae22024-79%1991
Green-tailed TowheePasserellidae22022-63%1993
Cliff SwallowHirundinidae22018-36%1995
MacGillivray's WarblerParulidae22024+42%1991
Wilson's WarblerParulidae22024-83%1991
Golden-crowned KingletRegulidae22017+25%1991
Mountain BluebirdTurdidae22022+20%1991
Red-naped SapsuckerPicidae22024+50%1993
Common RavenCorvidae22024+50%1993
American CrowCorvidae22024+100%2000
Orange-crowned WarblerParulidae22017+25%2000

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