BirdAnalyst
BBS Route · Colorado · BCR 16

Red Cliff Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 81 species recorded across 35 survey years, still active.

81Species 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 →
35Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1989–2025Span
2Observers

Bird Species Found on Colorado Red Cliff

Top 40 of 81 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 RobinTurdidae512025+0%1991
Ruby-crowned KingletRegulidae452025-39%1991
White-crowned SparrowPasserellidae292025-41%1991
Lincoln's SparrowPasserellidae282025-22%1991
Pine SiskinFringillidae212025-70%1991
Hermit ThrushTurdidae122025-69%1991
Song SparrowPasserellidae112025+118%1992
Warbling VireoVireonidae112025-37%1991
American CrowCorvidae102025+367%2000
Broad-tailed HummingbirdTrochilidae92025-43%1991
Green-tailed TowheePasserellidae82025-25%1993
Western TanagerCardinalidae72025+200%2000
MacGillivray's WarblerParulidae72025+42%1991
Canada GooseAnatidae62024-57%2017
Red CrossbillFringillidae52024-85%1991
Yellow WarblerParulidae52025-21%1991
Northern House WrenTroglodytidae52024-10%1991
Common RavenCorvidae52025+150%1993
Red-winged BlackbirdIcteridae52025+100%1994
Dusky FlycatcherTyrannidae42025-52%1991
Pine GrosbeakFringillidae42025-55%1991
Fox SparrowPasserellidae42025-29%1991
Mountain ChickadeeParidae42025-49%1991
Common NighthawkCaprimulgidae41993+0%1990
Clark's NutcrackerCorvidae42025+20%2005
American Three-toed WoodpeckerPicidae32025-17%2004
Canada JayCorvidae32025+38%1992
Violet-green SwallowHirundinidae32025-50%1991
Wilson's WarblerParulidae32025-84%1991
Red-tailed HawkAccipitridae32024+67%1997
Evening GrosbeakFringillidae21996+0%1989
Cassin's FinchFringillidae22025-75%1991
Cliff SwallowHirundinidae22018-36%1995
Tree SwallowHirundinidae22025-77%1991
Red-breasted NuthatchSittidae22025-20%1992
Golden-crowned KingletRegulidae22017+25%1991
Swainson's ThrushTurdidae22025-40%1991
Mountain BluebirdTurdidae22022+20%1991
Chipping SparrowPasserellidae22025+13%1994
Orange-crowned WarblerParulidae22017+25%2000

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