BirdAnalyst
BBS Route · Colorado · BCR 18

Sheridan Lak Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 52 species recorded across 15 survey years, still active.

52Species 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 →
15Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2016Span
4Observers

Bird Species Found on Colorado Sheridan Lak

Top 40 of 52 species by most recent count. Each links to its species trend.

Species recorded on the Sheridan Lak 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 MeadowlarkIcteridae882016-39%1998
Red-winged BlackbirdIcteridae822016-42%1998
Rock PigeonColumbidae632016+443%2001
Mourning DoveColumbidae562016-46%1998
Horned LarkAlaudidae562016-2%1998
Lark BuntingPasserellidae382016-84%1998
House SparrowPasseridae292016+78%1998
Yellow-headed BlackbirdIcteridae192016n/an/a
Western KingbirdTyrannidae162016+21%1998
Common GrackleIcteridae142016-99%1998
Lark SparrowPasserellidae142013+275%1997
Barn SwallowHirundinidae142016-5%1998
Long-billed CurlewScolopacidae111998n/an/a
Eurasian Collared-DoveColumbidae112016+450%2011
Burrowing OwlStrigidae102016+24%2000
Grasshopper SparrowPasserellidae92016-83%2000
DickcisselCardinalidae82016+500%2008
American AvocetRecurvirostridae62016+50%1995
Swainson's HawkAccipitridae62016+0%1998
Northern ShovelerAnatidae51995n/an/a
KilldeerCharadriidae52016-53%1998
Mountain PloverCharadriidae42014-50%2009
Chihuahuan RavenCorvidae32013n/an/a
GadwallAnatidae21995n/an/a
European StarlingSturnidae22014-18%1998
Cassin's SparrowPasserellidae22016-43%1998
Brown ThrasherMimidae22016+0%2008
American RobinTurdidae22016-33%2001
Common NighthawkCaprimulgidae22011+0%1997
Bullock's OrioleIcteridae22013+100%1997
Cliff SwallowHirundinidae22012+900%2007
Say's PhoebeTyrannidae22016+67%2009
American KestrelFalconidae22016+20%2011
American CootRallidae22014n/an/a
Black-necked StiltRecurvirostridae22014n/an/a
MallardAnatidae12014-40%2011
Blue-winged TealAnatidae12014-50%1995
Ring-necked PheasantPhasianidae12016-80%1998
Orchard OrioleIcteridae12012-75%1995
Brewer's BlackbirdIcteridae11997-80%1995

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