BirdAnalyst
BBS Route · Colorado · BCR 16

Buford Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 129 species recorded across 50 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 →
50Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2024Span
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 BlackbirdIcteridae842024-34%1972
Violet-green SwallowHirundinidae602024+764%1978
Black-billed MagpieCorvidae452024+9%1972
American RobinTurdidae352024-56%1972
Pinyon JayCorvidae28199528×1981
Cliff SwallowHirundinidae212024-26%1973
Brewer's BlackbirdIcteridae202024-56%1973
Yellow WarblerParulidae182024+173%1973
Northern House WrenTroglodytidae172024+153%1981
American CrowCorvidae162024+600%1993
Green-tailed TowheePasserellidae142024+147%1974
European StarlingSturnidae132024-53%1972
Song SparrowPasserellidae132024+35%1974
Western MeadowlarkIcteridae112024-55%1972
Great Blue HeronArdeidae112023+767%1975
Wilson's SnipeScolopacidae102024+165%1972
Barn SwallowHirundinidae102024-33%1973
Virginia's WarblerParulidae102024+283%1982
Common RavenCorvidae92024+200%1997
Mourning DoveColumbidae82024-77%1972
Warbling VireoVireonidae82024+0%1980
Brown-headed CowbirdIcteridae72024+267%1975
Chipping SparrowPasserellidae72024-28%1975
Northern Rough-winged SwallowHirundinidae72024-18%1974
Canada GooseAnatidae72024-44%2002
Wild TurkeyPhasianidae72022+90%2000
Savannah SparrowPasserellidae62024+8%1976
Common YellowthroatParulidae62024+125%1999
Willow FlycatcherTyrannidae52024-31%1974
Turkey VultureCathartidae52024+100%1989
Brewer's SparrowPasserellidae52024+75%1976
Western KingbirdTyrannidae52024+267%1982
KilldeerCharadriidae42023-67%1972
Red-tailed HawkAccipitridae42024+150%1978
House SparrowPasseridae42024+42%1974
Bullock's OrioleIcteridae42024+86%1981
Spotted TowheePasserellidae42024+88%1981
Eurasian Collared-DoveColumbidae42024+43%2011
Broad-tailed HummingbirdTrochilidae32024-79%1973
Tree SwallowHirundinidae32024-86%1974

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