BirdAnalyst
BBS Route · Colorado · BCR 16

Radium Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 90 species recorded across 6 survey years, no longer active.

90Species 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 →
6Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2013Span
3Observers

Bird Species Found on Colorado Radium

Top 40 of 90 species by most recent count. Each links to its species trend.

Species recorded on the Radium 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
Canada GooseAnatidae412004n/an/a
American RobinTurdidae252013-15%2004
American CrowCorvidae222013+414%2011
Black-billed MagpieCorvidae182013+2%2004
Green-tailed TowheePasserellidae112013-5%2004
Violet-green SwallowHirundinidae112012-31%1999
Warbling VireoVireonidae112012-88%1999
Pine SiskinFringillidae102012-53%1999
Hermit ThrushTurdidae102012-11%1999
Broad-tailed HummingbirdTrochilidae72013-43%2004
Song SparrowPasserellidae72013-38%2004
Northern House WrenTroglodytidae72013-84%1999
Dusky FlycatcherTyrannidae62013-47%2004
European StarlingSturnidae62013+50%1998
Common NighthawkCaprimulgidae52011+117%1999
Western Wood-PeweeTyrannidae52013-39%2004
Western TanagerCardinalidae52013+8%2004
Spotted SandpiperScolopacidae42013+0%1999
Dusky GrousePhasianidae41998n/an/a
Pinyon JayCorvidae42004+100%1998
Mountain BluebirdTurdidae42004+0%1998
Rock WrenTroglodytidae41999n/an/a
Golden-crowned KingletRegulidae42011+300%1999
Cassin's FinchFringillidae42013+300%2011
Belted KingfisherAlcedinidae32013+33%1999
Olive-sided FlycatcherTyrannidae32012-79%1999
Red-winged BlackbirdIcteridae32013-63%2004
Pine GrosbeakFringillidae32012-25%1998
Lincoln's SparrowPasserellidae32013-79%1999
Tree SwallowHirundinidae32013-17%2004
Virginia's WarblerParulidae32011-25%1998
Yellow WarblerParulidae32013-68%2004
Red-breasted NuthatchSittidae32011+25%1999
Mountain ChickadeeParidae32012-90%1999
American Three-toed WoodpeckerPicidae32011n/an/a
American KestrelFalconidae22013-20%1999
Downy WoodpeckerPicidae22011-33%1998
White-throated SwiftApodidae22012-25%1999
Hammond's FlycatcherTyrannidae21998n/an/a
Red CrossbillFringillidae22012-33%1998

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