BirdAnalyst
BBS Route · Colorado · BCR 16

Piceance Basin Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 69 species recorded across 8 survey years, no longer active.

69Species 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 →
8Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2012Span
4Observers

Bird Species Found on Colorado Piceance Basin

Top 40 of 69 species by most recent count. Each links to its species trend.

Species recorded on the Piceance Basin 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
Cliff SwallowHirundinidae452012+736%2000
Clark's NutcrackerCorvidae382004+138%2003
Mountain BluebirdTurdidae322012+185%2000
Brewer's SparrowPasserellidae222012+26%2000
Common RavenCorvidae182012+185%2000
American CootRallidae122006+225%1999
Brewer's BlackbirdIcteridae122012-15%2000
Townsend's SolitaireTurdidae112004+267%2003
Yellow-headed BlackbirdIcteridae102006+25%2000
House FinchFringillidae92004-23%2000
Gray FlycatcherTyrannidae82004-42%2000
American RobinTurdidae82012-56%2000
Black-billed MagpieCorvidae72012+226%2000
White-throated SwiftApodidae62003+143%1999
Western MeadowlarkIcteridae62006-46%2000
Barn SwallowHirundinidae62012-65%2000
Violet-green SwallowHirundinidae62012+200%2002
Broad-tailed HummingbirdTrochilidae52006+33%2000
Say's PhoebeTyrannidae52012-9%2000
Pinyon JayCorvidae52006+178%2000
Red-winged BlackbirdIcteridae52012-63%2000
Savannah SparrowPasserellidae52004n/an/a
Common NighthawkCaprimulgidae42002+300%1999
Wilson's SnipeScolopacidae32004-47%1999
Green-tailed TowheePasserellidae32012-22%2000
Chipping SparrowPasserellidae32012+8%2002
Mountain ChickadeeParidae32004n/an/a
Spotted SandpiperScolopacidae22006-33%1998
KilldeerCharadriidae22006-33%2000
Mourning DoveColumbidae22012-52%2000
Ash-throated FlycatcherTyrannidae22012-50%1999
Brown-headed CowbirdIcteridae22012-72%2000
Song SparrowPasserellidae22012-6%2000
Common YellowthroatParulidae22006-81%2000
Sage ThrasherMimidae22012-43%2000
Rock WrenTroglodytidae22012-30%2000
Red-tailed HawkAccipitridae22012+200%2002
Spotted TowheePasserellidae22006-29%2002
Pine SiskinFringillidae22003+0%2000
White-breasted NuthatchSittidae22004+100%2000

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