BirdAnalyst
BBS Route · Colorado · BCR 16

Doyleville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 121 species recorded across 35 survey years, still active.

121Species 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 →
1988–2025Span
4Observers

Bird Species Found on Colorado Doyleville

Top 40 of 121 species by most recent count. Each links to its species trend.

Species recorded on the Doyleville 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
Red-winged BlackbirdIcteridae982025-38%1991
Cliff SwallowHirundinidae912025-43%1991
Western MeadowlarkIcteridae312025+106%1991
Vesper SparrowPasserellidae262025+109%1992
Green-tailed TowheePasserellidae262025+73%1991
Black-billed MagpieCorvidae182025+31%1992
Brewer's BlackbirdIcteridae182025-46%1991
Brewer's SparrowPasserellidae172025+6%1991
Sage ThrasherMimidae162025-28%1991
Yellow WarblerParulidae142025+100%1991
American RobinTurdidae142025-12%1991
Warbling VireoVireonidae132025+147%1992
Song SparrowPasserellidae122025+155%1992
Horned LarkAlaudidae112025-22%1991
Savannah SparrowPasserellidae102025+25%1993
Wilson's SnipeScolopacidae92025-48%1991
Rock WrenTroglodytidae92025+62%1991
White-faced IbisThreskiornithidae82018-67%2005
Gunnison Sage-GrousePhasianidae82025+120%2004
House SparrowPasseridae82025+260%1999
Western Wood-PeweeTyrannidae72025+183%1996
Barn SwallowHirundinidae72025-88%1991
American White PelicanPelecanidae62024+500%2021
MallardAnatidae52025-7%1991
Common RavenCorvidae52025-14%1992
European StarlingSturnidae52025-45%1992
Dusky FlycatcherTyrannidae52025+0%1999
Mourning DoveColumbidae42025-74%1991
Broad-tailed HummingbirdTrochilidae42025-37%1991
Sagebrush SparrowPasserellidae41989n/an/a
Red CrossbillFringillidae42016+100%2004
GadwallAnatidae32025+45%1991
RedheadAnatidae32007+33%1994
Wilson's PhalaropeScolopacidae32005+50%1995
Tree SwallowHirundinidae32025-33%1991
Cassin's KingbirdTyrannidae31989n/an/a
Blue-winged TealAnatidae21989+0%1988
Cinnamon TealAnatidae22022+0%1996
Great Blue HeronArdeidae22024-67%1994
KilldeerCharadriidae22025-70%1991

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