BirdAnalyst
BBS Route · Colorado · BCR 18

Ellicott Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 63 species recorded across 24 survey years, still active.

63Species 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 →
1994–2025Span
5Observers

Bird Species Found on Colorado Ellicott

Top 40 of 63 species by most recent count. Each links to its species trend.

Species recorded on the Ellicott 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
House SparrowPasseridae68202524×1997
Western MeadowlarkIcteridae672025-51%1997
Lark BuntingPasserellidae622025-93%1997
Horned LarkAlaudidae422025-59%1997
Cassin's SparrowPasserellidae372025+319%1997
Rock PigeonColumbidae272025+117%1997
Western KingbirdTyrannidae232025+21%1997
Mourning DoveColumbidae182025-40%1997
Northern MockingbirdMimidae162025+571%1997
European StarlingSturnidae122025+25%1997
Mountain PloverCharadriidae11201311×2009
Lark SparrowPasserellidae72025-44%1999
Chipping SparrowPasserellidae72016+250%1997
Eurasian Collared-DoveColumbidae72025+440%2011
Canada GooseAnatidae72017n/an/a
House FinchFringillidae62025+29%1999
Cliff SwallowHirundinidae62014+129%2006
Bullock's OrioleIcteridae42025+50%2006
Ring-necked PheasantPhasianidae31997+50%1994
Swainson's HawkAccipitridae32025+0%1997
American RobinTurdidae32025-25%1997
Say's PhoebeTyrannidae32025-17%2006
KilldeerCharadriidae22024-70%1997
Common NighthawkCaprimulgidae22024-56%1997
Loggerhead ShrikeLaniidae22024-78%1997
MallardAnatidae22015+0%1997
Golden EagleAccipitridae21999+100%1995
Prairie FalconFalconidae22017+0%2003
Vesper SparrowPasserellidae22024-75%2006
Cassin's KingbirdTyrannidae22025-43%2008
Great-tailed GrackleIcteridae22023-33%2013
Canyon TowheePasserellidae22017n/an/a
Turkey VultureCathartidae22023+100%2018
Red-tailed HawkAccipitridae12025-29%1999
Brewer's BlackbirdIcteridae12025+10%1997
Common GrackleIcteridae12024-66%1997
Grasshopper SparrowPasserellidae12023-80%2003
Barn SwallowHirundinidae12022-87%1997
Yellow WarblerParulidae12010+0%1994
Scaled QuailOdontophoridae12022-11%2006

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