BirdAnalyst
BBS Route · Wyoming · BCR 10

Prior Flats Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 72 species recorded across 11 survey years, still active.

72Species 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 →
11Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1991–2024Span
4Observers

Bird Species Found on Wyoming Prior Flats

Top 40 of 72 species by most recent count. Each links to its species trend.

Species recorded on the Prior Flats 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
American White PelicanPelecanidae152015n/an/a
Western MeadowlarkIcteridae142024+50%2005
Horned LarkAlaudidae122024-68%2005
American RobinTurdidae122024-15%2005
Clark's NutcrackerCorvidae112024+24%2005
Vesper SparrowPasserellidae112024-13%2005
Mountain BluebirdTurdidae102024-22%2006
Cliff SwallowHirundinidae102016+340%2005
Warbling VireoVireonidae82024+48%2005
Orange-crowned WarblerParulidae82017+500%2005
Brewer's BlackbirdIcteridae62024+450%2022
Green-tailed TowheePasserellidae52024-21%2005
Ruby-crowned KingletRegulidae52024-89%2005
Hermit ThrushTurdidae52024-69%2005
Brewer's SparrowPasserellidae52024-50%2006
Chipping SparrowPasserellidae42024+33%2005
Sage ThrasherMimidae42024+11%2005
American CrowCorvidae32022+0%2005
Rock WrenTroglodytidae32024-57%2005
GadwallAnatidae21991n/an/a
Golden EagleAccipitridae22021-29%2005
Barn SwallowHirundinidae22015+100%1991
Mountain ChickadeeParidae22024-75%2005
Swainson's ThrushTurdidae22005-71%1991
Common PoorwillCaprimulgidae22006-60%2004
Black-billed MagpieCorvidae22021-60%2004
Red-breasted NuthatchSittidae22024-77%2006
California GullLaridae22022-63%2006
Grasshopper SparrowPasserellidae22005n/an/a
Pine GrosbeakFringillidae22022n/an/a
American AvocetRecurvirostridae11991n/an/a
Sharp-shinned HawkAccipitridae12024+0%1991
Red-tailed HawkAccipitridae12021+0%2004
American KestrelFalconidae11991n/an/a
Hairy WoodpeckerPicidae12023+25%2005
Broad-tailed HummingbirdTrochilidae12023+25%2005
Olive-sided FlycatcherTyrannidae11991n/an/a
Dusky FlycatcherTyrannidae12022+50%2005
Common RavenCorvidae12024+28%2005
Cassin's FinchFringillidae12022-87%2006

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