BirdAnalyst
BBS Route · Colorado · BCR 18

Burlington Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 54 species recorded across 19 survey years, still active.

54Species 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 →
19Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2003–2024Span
2Observers

Bird Species Found on Colorado Burlington

Top 40 of 54 species by most recent count. Each links to its species trend.

Species recorded on the Burlington 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 LarkAlaudidae1512024+47%2005
Western MeadowlarkIcteridae492024-21%2005
Red-winged BlackbirdIcteridae462024-1%2005
Mourning DoveColumbidae362024+1%2005
Cliff SwallowHirundinidae302019+128%2006
House SparrowPasseridae282024+43%2005
Northern ShovelerAnatidae152015n/an/a
Common GrackleIcteridae132024-52%2005
DickcisselCardinalidae92024+144%2014
Eurasian Collared-DoveColumbidae92024+5%2013
Ring-necked PheasantPhasianidae62024+40%2005
Western KingbirdTyrannidae62024-52%2005
Chimney SwiftApodidae62014+500%2004
Grasshopper SparrowPasserellidae52023+96%2005
Barn SwallowHirundinidae52024-44%2005
House FinchFringillidae42024-46%2005
Lark BuntingPasserellidae42024-90%2005
American RobinTurdidae42024-30%2005
KilldeerCharadriidae32024-47%2005
Orchard OrioleIcteridae32023-14%2005
Blue GrosbeakCardinalidae32023+75%2011
Brown ThrasherMimidae32024-50%2005
Swainson's HawkAccipitridae32024-50%2012
Great-tailed GrackleIcteridae32024-41%2012
MallardAnatidae22022+30%2011
Brown-headed CowbirdIcteridae22024-52%2005
Burrowing OwlStrigidae22024-47%2006
Northern Rough-winged SwallowHirundinidae22015+0%2004
Common NighthawkCaprimulgidae22023+150%2008
Lark SparrowPasserellidae22023-29%2012
Blue-winged TealAnatidae22015-50%2012
Canada GooseAnatidae22013n/an/a
Northern PintailAnatidae22018n/an/a
Rock PigeonColumbidae12024-80%2005
Red-tailed HawkAccipitridae12014+67%2006
Great Horned OwlStrigidae12014-33%2011
European StarlingSturnidae12024+160%2005
Vesper SparrowPasserellidae12021-57%2011
Loggerhead ShrikeLaniidae12011-67%2003
Turkey VultureCathartidae12024-25%2014

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