BirdAnalyst
BBS Route · Colorado · BCR 18

Julesburg Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 92 species recorded across 16 survey years, still active.

92Species 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 →
16Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2021Span
2Observers

Bird Species Found on Colorado Julesburg

Top 40 of 92 species by most recent count. Each links to its species trend.

Species recorded on the Julesburg 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
Cliff SwallowHirundinidae1522021+18%2004
Common GrackleIcteridae1362021-10%2004
Western MeadowlarkIcteridae1172021-7%2004
Red-winged BlackbirdIcteridae1122021+12%2004
European StarlingSturnidae922021+30%2004
House SparrowPasseridae812021+3%2004
Canada GooseAnatidae622021-13%2007
Mourning DoveColumbidae572021+0%2004
Ring-necked PheasantPhasianidae372021+31%2004
Barn SwallowHirundinidae302021+20%2004
Rock PigeonColumbidae292021+31%2007
Horned LarkAlaudidae292021-28%2004
American RobinTurdidae292021-43%2004
Brown-headed CowbirdIcteridae242021-16%2004
Eurasian Collared-DoveColumbidae212021+407%2009
Western KingbirdTyrannidae172021-57%2004
KilldeerCharadriidae152021-11%2004
DickcisselCardinalidae142021+42%2004
American White PelicanPelecanidae82017-70%2009
RedheadAnatidae82004n/an/a
Wilson's PhalaropeScolopacidae82021+167%2004
Orchard OrioleIcteridae72021-26%2007
Lark SparrowPasserellidae72021+0%2004
Yellow WarblerParulidae72021+200%2007
Double-crested CormorantPhalacrocoracidae72019+33%2008
MallardAnatidae62021-55%2004
Eastern KingbirdTyrannidae52021-54%2004
Brown ThrasherMimidae52021+18%2007
White-faced IbisThreskiornithidae52021-29%2008
Black TernLaridae42002n/an/a
GadwallAnatidae42004+0%2002
American WigeonAnatidae42012+100%2002
Blue-winged TealAnatidae42021+0%2007
Ruddy DuckAnatidae42021-77%2004
Turkey VultureCathartidae42019+43%2012
Red-tailed HawkAccipitridae32021+125%2004
Blue JayCorvidae32016+50%1998
Clark's GrebePodicipedidae32002n/an/a
California GullLaridae32002n/an/a
Northern ShovelerAnatidae22021-68%2012

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