BirdAnalyst
BBS Route · Colorado · BCR 18

Amherst Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 68 species recorded across 32 survey years, still active.

68Species 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 →
32Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1992–2024Span
1Observers

Bird Species Found on Colorado Amherst

Top 40 of 68 species by most recent count. Each links to its species trend.

Species recorded on the Amherst 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 MeadowlarkIcteridae1722024-20%1994
Red-winged BlackbirdIcteridae892024+13%1994
Mourning DoveColumbidae842024+28%1994
Common GrackleIcteridae432024-39%1994
Lark BuntingPasserellidae392024-56%1994
Ring-necked PheasantPhasianidae302024-40%1994
Horned LarkAlaudidae252024-81%1994
Western KingbirdTyrannidae202024-14%1994
Brown-headed CowbirdIcteridae182024+486%2000
American RobinTurdidae152024+75%1994
Grasshopper SparrowPasserellidae62024-88%1994
House SparrowPasseridae52024-87%1994
DickcisselCardinalidae52024+229%1995
Barn SwallowHirundinidae42024-82%1994
Wilson's PhalaropeScolopacidae41995n/an/a
Red-tailed HawkAccipitridae32022+50%1995
American CrowCorvidae32022+67%1994
Northern PintailAnatidae31998+200%1996
Blue GrosbeakCardinalidae32024+125%1998
Northern ShovelerAnatidae32009+50%2007
Baltimore OrioleIcteridae32021+200%2008
Blue-winged TealAnatidae22018-78%1997
Upland SandpiperScolopacidae21999+0%1992
Bullock's OrioleIcteridae22024-38%1994
Swainson's HawkAccipitridae22024-50%1995
Chimney SwiftApodidae22021+150%1994
GadwallAnatidae22018-33%2004
American WigeonAnatidae22009+0%1998
Black-billed MagpieCorvidae22003n/an/a
Eared GrebePodicipedidae22007n/an/a
Eurasian Collared-DoveColumbidae22024+60%2012
Ruddy DuckAnatidae22011n/an/a
MallardAnatidae12023-93%1994
KilldeerCharadriidae12022-72%1994
Northern HarrierAccipitridae12024-40%1995
Short-eared OwlStrigidae12014+0%1992
Say's PhoebeTyrannidae12023+67%2008
European StarlingSturnidae12024-54%1995
Common YellowthroatParulidae11992n/an/a
Great Blue HeronArdeidae12012-50%1993

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