BirdAnalyst
BBS Route · Wyoming · BCR 10

Green River Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 114 species recorded across 8 survey years, no longer active.

114Species 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 →
8Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1977–1984Span
2Observers

Bird Species Found on Wyoming Green River

Top 40 of 114 species by most recent count. Each links to its species trend.

Species recorded on the Green River 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
Mourning DoveColumbidae931984-14%1979
Tree SwallowHirundinidae671984-4%1979
European StarlingSturnidae491984+385%1981
Black-billed MagpieCorvidae441984-44%1979
Brewer's BlackbirdIcteridae381984-45%1979
Sagebrush SparrowPasserellidae361984-25%1979
Common NighthawkCaprimulgidae311984+49%1979
Northern House WrenTroglodytidae311984+477%1979
Sage ThrasherMimidae291984-27%1979
Yellow WarblerParulidae221984-48%1979
Mountain BluebirdTurdidae221984-15%1979
Brewer's SparrowPasserellidae211984-23%1979
Yellow-breasted ChatIcteriidae211982+40%1979
Cliff SwallowHirundinidae211984+16%1980
KilldeerCharadriidae201984-49%1979
American RobinTurdidae171984-38%1979
Yellow-headed BlackbirdIcteridae141984-62%1979
Western MeadowlarkIcteridae141984-46%1979
Great Blue HeronArdeidae131984-53%1979
Horned LarkAlaudidae121984-59%1979
Vesper SparrowPasserellidae121984-23%1979
Violet-green SwallowHirundinidae121984+40%1979
Bullock's OrioleIcteridae111984+36%1979
Song SparrowPasserellidae111982+38%1979
Eastern KingbirdTyrannidae101984+90%1980
Wilson's WarblerParulidae101982+57%1978
Ring-billed GullLaridae91982+800%1977
Ash-throated FlycatcherTyrannidae91980+125%1978
MallardAnatidae81984-72%1979
American AvocetRecurvirostridae81982+700%1978
Common MerganserAnatidae71984+258%1979
Red-tailed HawkAccipitridae71984+46%1979
Red-naped SapsuckerPicidae71982+29%1979
Western TanagerCardinalidae71982+36%1979
Warbling VireoVireonidae71981+267%1979
Brown-headed CowbirdIcteridae71984n/an/a
GadwallAnatidae61984+27%1980
Chipping SparrowPasserellidae61982-18%1978
Black-capped ChickadeeParidae61982+7%1979
Green-winged TealAnatidae51981+275%1978

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