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BBS Route · Wyoming · BCR 10

Yellowstone Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 125 species recorded across 37 survey years, still active.

125Species 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 →
37Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1987–2025Span
7Observers

Bird Species Found on Wyoming Yellowstone

Top 40 of 125 species by most recent count. Each links to its species trend.

Species recorded on the Yellowstone 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
Canada GooseAnatidae13352025+178%1989
Eared GrebePodicipedidae127202454×2012
Cliff SwallowHirundinidae1152025-55%1989
American RobinTurdidae592025-40%1989
Tree SwallowHirundinidae502025+126%1989
Ruby-crowned KingletRegulidae492025+77%1989
White-crowned SparrowPasserellidae352025+26%1989
Bank SwallowHirundinidae352025-38%1990
Savannah SparrowPasserellidae292025-35%1989
Lesser ScaupAnatidae282025-33%1989
Sandhill CraneGruidae252025+240%1989
Mountain ChickadeeParidae192025+16%1989
Lincoln's SparrowPasserellidae162025+97%1990
Common RavenCorvidae142025-7%1989
Clark's NutcrackerCorvidae112025-54%1989
Chipping SparrowPasserellidae112025-59%1989
Harlequin DuckAnatidae112025+100%2006
Pine SiskinFringillidae102024-39%1989
Violet-green SwallowHirundinidae102025-33%1989
Common GoldeneyeAnatidae101999n/an/a
MallardAnatidae92025-77%1989
Spotted SandpiperScolopacidae92025-27%1989
American WigeonAnatidae82025-89%1989
Great Blue HeronArdeidae82025+171%1992
BuffleheadAnatidae82025-62%1990
Wilson's SnipeScolopacidae62025+0%1989
American CrowCorvidae62022+14%1993
Brewer's SparrowPasserellidae62025-33%1992
Caspian TernLaridae61991+500%1988
American AvocetRecurvirostridae62024-81%2013
Barrow's GoldeneyeAnatidae42024-66%1989
Brewer's BlackbirdIcteridae42025-92%1989
Wilson's PhalaropeScolopacidae42013-48%1991
Franklin's GullLaridae31987n/an/a
American White PelicanPelecanidae32025+7%1989
GadwallAnatidae32024-81%1989
Cinnamon TealAnatidae32025-50%1989
Canada JayCorvidae32025-71%1990
Western MeadowlarkIcteridae32022-22%1990
Vesper SparrowPasserellidae32025+171%1989

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