BirdAnalyst
BBS Route · Colorado · BCR 16

Buford Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 129 species recorded across 51 survey years, still active.

129Species 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 →
51Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2025Span
5Observers

Bird Species Found on Colorado Buford

Top 40 of 129 species by most recent count. Each links to its species trend.

Species recorded on the Buford 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 BlackbirdIcteridae832025-34%1972
Black-billed MagpieCorvidae372025-9%1972
Cliff SwallowHirundinidae342025-8%1973
Brewer's BlackbirdIcteridae302025-49%1973
American RobinTurdidae302025-57%1972
Pinyon JayCorvidae28199528×1981
Violet-green SwallowHirundinidae252025+982%1978
Song SparrowPasserellidae182025+31%1974
Western MeadowlarkIcteridae142025-55%1972
American CrowCorvidae142025+543%1993
Mourning DoveColumbidae122025-63%1972
Tree SwallowHirundinidae112025-86%1974
Yellow WarblerParulidae102025+96%1973
Northern House WrenTroglodytidae102025+118%1981
Brown-headed CowbirdIcteridae92025+178%1975
Wilson's SnipeScolopacidae82025+112%1972
Red-tailed HawkAccipitridae82025+200%1978
Virginia's WarblerParulidae82025+317%1982
Common RavenCorvidae82025+233%1997
House FinchFringillidae72025+120%1978
Chipping SparrowPasserellidae72024-28%1975
Common YellowthroatParulidae72025+250%1999
Canada GooseAnatidae72024-44%2002
Northern Rough-winged SwallowHirundinidae62025+0%1974
Savannah SparrowPasserellidae62024+8%1976
Eurasian Collared-DoveColumbidae62025+86%2011
MallardAnatidae52025-53%1973
Western Wood-PeweeTyrannidae52025-42%1980
Barn SwallowHirundinidae52025-37%1973
Great Blue HeronArdeidae52025+667%1975
House SparrowPasseridae52025+42%1974
Turkey VultureCathartidae52024+100%1989
Warbling VireoVireonidae52025+0%1980
Bald EagleAccipitridae52025+150%2009
Common MerganserAnatidae42025+0%1981
Mountain BluebirdTurdidae42025+100%1980
Green-tailed TowheePasserellidae42025+88%1974
European StarlingSturnidae32025-59%1972
Vesper SparrowPasserellidae32025+0%1975
Brewer's SparrowPasserellidae32025+75%1976

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