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BBS Route · Wyoming · BCR 10

Sweetwater Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 31 survey years, still active.

77Species 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 →
31Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1980–2024Span
5Observers

Bird Species Found on Wyoming Sweetwater

Top 40 of 77 species by most recent count. Each links to its species trend.

Species recorded on the Sweetwater 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 LarkAlaudidae732024-24%1982
Northern Rough-winged SwallowHirundinidae572008+630%1983
Cliff SwallowHirundinidae342017+290%1982
Brewer's SparrowPasserellidae272024-56%1982
Vesper SparrowPasserellidae172024+157%1982
Sage ThrasherMimidae152024-26%1982
Common RavenCorvidae152024+200%1994
American White PelicanPelecanidae142009+40%2000
Thick-billed LongspurCalcariidae122009+100%1983
American GoldfinchFringillidae82009+88%1993
Lark BuntingPasserellidae82024+220%1982
Lark SparrowPasserellidae62017-25%1998
Greater Sage-GrousePhasianidae52009+25%1982
Green-tailed TowheePasserellidae52024-13%1985
Cinnamon TealAnatidae51991n/an/a
KilldeerCharadriidae42024+39%1982
Bank SwallowHirundinidae42024+300%1980
Canada GooseAnatidae41999n/an/a
Sagebrush SparrowPasserellidae32019+300%1996
Red-winged BlackbirdIcteridae32024-6%1983
Yellow WarblerParulidae32009+67%1983
Black-billed MagpieCorvidae22024+0%1993
Barn SwallowHirundinidae22024+79%1982
Wilson's PhalaropeScolopacidae21988+100%1981
Common GrackleIcteridae22019-67%1983
Green-winged TealAnatidae22024+0%1989
Blue-winged TealAnatidae21993+100%1983
House SparrowPasseridae22024+71%1991
Ferruginous HawkAccipitridae22009+233%1992
American CrowCorvidae21993+100%1984
Say's PhoebeTyrannidae22009+67%1994
Mountain BluebirdTurdidae22009-40%1990
Sandhill CraneGruidae22019-17%1995
Yellow-headed BlackbirdIcteridae22024-25%1997
Northern ShovelerAnatidae21993n/an/a
Savannah SparrowPasserellidae22024-44%1995
Double-crested CormorantPhalacrocoracidae21997n/an/a
Common PoorwillCaprimulgidae22009-33%2007
Prairie FalconFalconidae12009+33%1986
Western MeadowlarkIcteridae12024+107%1982

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