BirdAnalyst
BBS Route · Colorado · BCR 16

Ragged Mtn. Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 111 species recorded across 26 survey years, still active.

111Species 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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2019Span
1Observers

Bird Species Found on Colorado Ragged Mtn.

Top 40 of 111 species by most recent count. Each links to its species trend.

Species recorded on the Ragged Mtn. 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 RobinTurdidae1032019-18%1996
Northern House WrenTroglodytidae352019+414%1996
White-crowned SparrowPasserellidae342019-50%1996
Broad-tailed HummingbirdTrochilidae312019-14%1996
Pine SiskinFringillidae302019-28%1996
Warbling VireoVireonidae302019-38%1996
Yellow WarblerParulidae302019+67%1996
Lincoln's SparrowPasserellidae282019+108%2001
Brown-headed CowbirdIcteridae202019+68%1996
Spotted TowheePasserellidae152019-69%1996
Purple MartinHirundinidae152019+34%1998
Violet-green SwallowHirundinidae142019+234%1996
Black-billed MagpieCorvidae122018+33%1998
Green-tailed TowheePasserellidae92019-68%1996
Song SparrowPasserellidae82019-25%1996
Virginia's WarblerParulidae82019+50%1996
MacGillivray's WarblerParulidae82019+33%1996
European StarlingSturnidae72013+200%1997
Savannah SparrowPasserellidae72019-33%1996
Ruby-crowned KingletRegulidae72019+39%1996
Olive-sided FlycatcherTyrannidae52019+50%1996
Tree SwallowHirundinidae52019-53%1996
Hermit ThrushTurdidae52019-64%1996
Fox SparrowPasserellidae52019+150%2001
Common NighthawkCaprimulgidae42019+200%1999
Red-winged BlackbirdIcteridae42018-26%1996
Mountain ChickadeeParidae42018+200%1996
Mountain BluebirdTurdidae42019-56%1996
Vesper SparrowPasserellidae42019+100%2004
Dusky FlycatcherTyrannidae42019+56%2006
Mourning DoveColumbidae42013-40%2008
Clark's NutcrackerCorvidae42014n/an/a
Western Wood-PeweeTyrannidae32019+127%1996
Western MeadowlarkIcteridae32019+100%1996
Brewer's BlackbirdIcteridae32017-74%1996
Barn SwallowHirundinidae32012-38%1996
Wilson's WarblerParulidae32019-54%1997
Black-capped ChickadeeParidae32019+57%1995
Wilson's SnipeScolopacidae32012+50%1999
Cedar WaxwingBombycillidae32019+75%2010

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