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BBS Route · Wyoming · BCR 10

Hayden Val Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 51 species recorded across 2 survey years, no longer active.

51Species 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 →
2Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1985–1986Span
1Observers

Bird Species Found on Wyoming Hayden Val

Top 40 of 51 species by most recent count. Each links to its species trend.

Species recorded on the Hayden Val 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 GooseAnatidae3321986-5%1985
Cliff SwallowHirundinidae761986-33%1985
American RobinTurdidae451986-59%1985
Savannah SparrowPasserellidae351986-3%1985
Common MerganserAnatidae301986+58%1985
Lesser ScaupAnatidae291986+0%1985
California GullLaridae251986+150%1985
MallardAnatidae251986-42%1985
White-crowned SparrowPasserellidae241986-25%1985
Barrow's GoldeneyeAnatidae191986-17%1985
Mountain ChickadeeParidae181986+39%1985
Tree SwallowHirundinidae161986+433%1985
Chipping SparrowPasserellidae141986+40%1985
American WigeonAnatidae131986+0%1985
American White PelicanPelecanidae121986+33%1985
Pine SiskinFringillidae121986-63%1985
Violet-green SwallowHirundinidae121986+71%1985
Brewer's BlackbirdIcteridae111986-86%1985
Ruby-crowned KingletRegulidae111986+120%1985
Brown-headed CowbirdIcteridae111986n/an/a
Lincoln's SparrowPasserellidae111986n/an/a
Cinnamon TealAnatidae101986+25%1985
Bank SwallowHirundinidae101986+233%1985
Hermit ThrushTurdidae91985n/an/a
BuffleheadAnatidae71985n/an/a
Sandhill CraneGruidae61985n/an/a
Red-winged BlackbirdIcteridae61986-25%1985
Green-winged TealAnatidae51986-29%1985
Common RavenCorvidae51986-38%1985
Vesper SparrowPasserellidae51985n/an/a
Song SparrowPasserellidae51985n/an/a
European StarlingSturnidae41985n/an/a
GadwallAnatidae41986n/an/a
Hairy WoodpeckerPicidae31985n/an/a
SoraRallidae21986-60%1985
Wilson's SnipeScolopacidae21986-71%1985
Spotted SandpiperScolopacidae21986-88%1985
Clark's NutcrackerCorvidae21986-95%1985
Belted KingfisherAlcedinidae11985n/an/a
Canada JayCorvidae11986-75%1985

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