BirdAnalyst
BBS Route · Colorado · BCR 16

Cheesman Lk Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 109 species recorded across 51 survey years, still active.

109Species 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 →
1969–2025Span
5Observers

Bird Species Found on Colorado Cheesman Lk

Top 40 of 109 species by most recent count. Each links to its species trend.

Species recorded on the Cheesman Lk 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
American RobinTurdidae372025+3%1971
Western TanagerCardinalidae212025+3%1971
Warbling VireoVireonidae202025+41%1971
Cliff SwallowHirundinidae202021+567%1977
Northern House WrenTroglodytidae122025+32%1971
American CrowCorvidae122025+313%1975
Western Wood-PeweeTyrannidae112025-11%1971
Broad-tailed HummingbirdTrochilidae102025-23%1971
Green-tailed TowheePasserellidae102025-40%1971
Pygmy NuthatchSittidae102025+8%1971
Tree SwallowHirundinidae92025+575%1979
Chipping SparrowPasserellidae72025+4%1971
Common RavenCorvidae62025+114%1974
Pine SiskinFringillidae62024+22%1972
Song SparrowPasserellidae62025-25%1971
Western MeadowlarkIcteridae62024+275%1989
American GoldfinchFringillidae62025+450%1996
Mourning DoveColumbidae52025-35%1972
Brewer's BlackbirdIcteridae42019+233%1978
Black-headed GrosbeakCardinalidae42025+22%1971
Plumbeous VireoVireonidae42025-67%1971
Yellow WarblerParulidae42025+178%1971
Mountain ChickadeeParidae42025-72%1971
White-breasted NuthatchSittidae42025+67%1972
Lazuli BuntingCardinalidae42025+71%1974
House SparrowPasseridae41981-33%1980
Cedar WaxwingBombycillidae42025+300%2007
Hairy WoodpeckerPicidae32025-14%1974
Olive-sided FlycatcherTyrannidae32025-19%1971
Violet-green SwallowHirundinidae32025-42%1971
Western BluebirdTurdidae32025+150%1972
Clark's NutcrackerCorvidae32025+67%1972
European StarlingSturnidae31999+0%1972
Hammond's FlycatcherTyrannidae32025-90%1990
Spotted TowheePasserellidae32025+200%1991
House FinchFringillidae32024-25%2000
Canyon WrenTroglodytidae32010+200%2007
MacGillivray's WarblerParulidae22025+0%1971
Ruby-crowned KingletRegulidae22025+86%1974
Hermit ThrushTurdidae22022-57%1971

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