BirdAnalyst
BBS Route · Colorado · BCR 18

Bennett Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 58 species recorded across 24 survey years, still active.

58Species 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 →
24Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2018Span
1Observers

Bird Species Found on Colorado Bennett

Top 40 of 58 species by most recent count. Each links to its species trend.

Species recorded on the Bennett 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 MeadowlarkIcteridae2012018-7%1997
Mourning DoveColumbidae1132018-29%1997
Horned LarkAlaudidae952018-60%1997
Common GrackleIcteridae912018+77%1997
House SparrowPasseridae412018-45%1997
Red-winged BlackbirdIcteridae402018-28%1997
European StarlingSturnidae212018-80%1997
Eurasian Collared-DoveColumbidae172018+469%2013
Barn SwallowHirundinidae162018+36%1997
House FinchFringillidae132018-21%1997
American RobinTurdidae132018-34%1997
Western KingbirdTyrannidae122018-49%1997
Lark BuntingPasserellidae112018-88%1997
Loggerhead ShrikeLaniidae92018+300%1997
Rock PigeonColumbidae82018+21%1997
Brewer's BlackbirdIcteridae72017-40%1999
American GoldfinchFringillidae62015+13%2004
Vesper SparrowPasserellidae62018+67%1999
Bullock's OrioleIcteridae52018+9%1997
Yellow WarblerParulidae52018+20%1998
Swainson's HawkAccipitridae42018-22%1997
Western Wood-PeweeTyrannidae42017+133%1997
American CrowCorvidae42005+300%2001
Red-tailed HawkAccipitridae32018+120%1999
Common NighthawkCaprimulgidae32018+0%1999
American KestrelFalconidae22018-43%1998
Eastern KingbirdTyrannidae22016-78%1997
Grasshopper SparrowPasserellidae22018-33%1997
Black-capped ChickadeeParidae21999+100%1995
Northern House WrenTroglodytidae22018-40%1998
Wilson's PhalaropeScolopacidae22001n/an/a
Blue GrosbeakCardinalidae22004n/an/a
Burrowing OwlStrigidae22016+50%2007
MallardAnatidae12016-40%1997
KilldeerCharadriidae12018-33%1997
Ring-necked PheasantPhasianidae12011-80%1997
Say's PhoebeTyrannidae12017-20%2003
Black-billed MagpieCorvidae12018-42%1997
Brown-headed CowbirdIcteridae12018-36%1997
Lark SparrowPasserellidae12011-67%1998

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