BirdAnalyst
BBS Route · Colorado · BCR 18

Bennett Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 59 species recorded across 25 survey years, still active.

59Species 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 →
25Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2025Span
2Observers

Bird Species Found on Colorado Bennett

Top 40 of 59 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
Horned LarkAlaudidae1842025-39%1997
Western MeadowlarkIcteridae1222025-25%1997
European StarlingSturnidae1172025-62%1997
Mourning DoveColumbidae1032025-25%1997
House SparrowPasseridae812025-12%1997
Common GrackleIcteridae722025+62%1997
American RobinTurdidae362025-16%1997
Eurasian Collared-DoveColumbidae282025+492%2013
Lark BuntingPasserellidae272025-88%1997
Red-winged BlackbirdIcteridae232025-12%1997
Western KingbirdTyrannidae212025-52%1997
House FinchFringillidae132025+10%1997
Bullock's OrioleIcteridae112025+91%1997
Loggerhead ShrikeLaniidae92025+257%1997
Rock PigeonColumbidae82025+13%1997
Brewer's BlackbirdIcteridae72017-40%1999
American GoldfinchFringillidae62015+13%2004
Vesper SparrowPasserellidae62018+67%1999
Say's PhoebeTyrannidae52025+60%2003
Black-billed MagpieCorvidae52025-17%1997
Swainson's HawkAccipitridae42025+11%1997
Western Wood-PeweeTyrannidae42017+133%1997
American CrowCorvidae42005+300%2001
KilldeerCharadriidae32025-53%1997
Common NighthawkCaprimulgidae32018+0%1999
American KestrelFalconidae22025-29%1998
Grasshopper SparrowPasserellidae22025-42%1997
Black-capped ChickadeeParidae21999+100%1995
Northern House WrenTroglodytidae22018-40%1998
Turkey VultureCathartidae22025+100%2000
Wilson's PhalaropeScolopacidae22001n/an/a
Blue GrosbeakCardinalidae22004n/an/a
Burrowing OwlStrigidae22016+50%2007
MallardAnatidae12016-40%1997
Ring-necked PheasantPhasianidae12011-80%1997
Red-tailed HawkAccipitridae12025+80%1999
Eastern KingbirdTyrannidae12025-85%1997
Brown-headed CowbirdIcteridae12025-46%1997
Lark SparrowPasserellidae12011-67%1998
Brewer's SparrowPasserellidae12008-73%1997

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