BirdAnalyst
BBS Route · Colorado · BCR 16

Gardner Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 123 species recorded across 22 survey years, still active.

123Species 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 →
22Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2024Span
3Observers

Bird Species Found on Colorado Gardner

Top 40 of 123 species by most recent count. Each links to its species trend.

Species recorded on the Gardner 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
Western MeadowlarkIcteridae402024-74%2000
Western Wood-PeweeTyrannidae272024-57%2000
Vesper SparrowPasserellidae222024-86%2000
Mourning DoveColumbidae172024-68%2000
American RobinTurdidae172024-58%2000
Common RavenCorvidae102024-66%2000
Pinyon JayCorvidae92024-80%2000
Green-tailed TowheePasserellidae92024+104%2000
Mountain ChickadeeParidae92024-85%2000
Western TanagerCardinalidae72024-61%2000
Black-billed MagpieCorvidae62024-77%2000
Chipping SparrowPasserellidae62024-74%2000
House SparrowPasseridae62001+450%1999
White-crowned SparrowPasserellidae62011n/an/a
Common NighthawkCaprimulgidae52024-77%2000
Warbling VireoVireonidae52024-70%2000
Hermit ThrushTurdidae52024-90%2000
Mountain BluebirdTurdidae52024-83%2000
Yellow-headed BlackbirdIcteridae52021n/an/a
Band-tailed PigeonColumbidae41999+300%1998
Say's PhoebeTyrannidae42024-77%2005
Steller's JayCorvidae42024-53%2000
Spotted TowheePasserellidae42024-89%2000
Northern House WrenTroglodytidae42024-75%2000
White-breasted NuthatchSittidae42022-73%2000
Grasshopper SparrowPasserellidae42002+0%2000
Lincoln's SparrowPasserellidae42001+300%2000
Evening GrosbeakFringillidae42008n/an/a
Woodhouse's Scrub-JayCorvidae32022-80%2000
Red-winged BlackbirdIcteridae32024-80%2000
Brewer's BlackbirdIcteridae32024-36%2000
American GoldfinchFringillidae32022-60%2000
Lark SparrowPasserellidae32024-71%2000
Cliff SwallowHirundinidae32024-81%2000
Barn SwallowHirundinidae32022-72%2000
Violet-green SwallowHirundinidae32024-86%2000
Bewick's WrenTroglodytidae32007+120%2000
Turkey VultureCathartidae32024+17%2010
Lewis's WoodpeckerPicidae32024+22%2002
Cassin's KingbirdTyrannidae32024-29%2007

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