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BBS Route · Wyoming · BCR 17

Thunder Basin Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 45 species recorded across 7 survey years, still active.

45Species 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 →
7Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2011–2024Span
3Observers

Bird Species Found on Wyoming Thunder Basin

Top 40 of 45 species by most recent count. Each links to its species trend.

Species recorded on the Thunder Basin 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
Western MeadowlarkIcteridae1502024+14%2013
Lark BuntingPasserellidae402024+0%2013
Common NighthawkCaprimulgidae232024+35%2013
Red-winged BlackbirdIcteridae202024+775%2014
Brewer's BlackbirdIcteridae192018+108%2013
Horned LarkAlaudidae182024+68%2013
KilldeerCharadriidae92024+171%2014
Mourning DoveColumbidae92024+79%2013
Grasshopper SparrowPasserellidae62015+200%2014
Savannah SparrowPasserellidae52011n/an/a
Say's PhoebeTyrannidae52024+67%2014
Greater Sage-GrousePhasianidae42018+100%2012
Sage ThrasherMimidae42024+125%2015
Common GrackleIcteridae42018+0%2015
Red-tailed HawkAccipitridae32024+133%2014
Lark SparrowPasserellidae32024-44%2014
Mountain PloverCharadriidae32013n/an/a
Vesper SparrowPasserellidae32018+50%2013
Brown-headed CowbirdIcteridae32018+0%2015
Ferruginous HawkAccipitridae22011n/an/a
Western KingbirdTyrannidae22024+100%2013
Black-billed MagpieCorvidae22018+33%2012
European StarlingSturnidae22024+140%2012
Chipping SparrowPasserellidae22018+100%2012
Brewer's SparrowPasserellidae22024-15%2014
Upland SandpiperScolopacidae22024n/an/a
Prairie FalconFalconidae12018+0%2011
American KestrelFalconidae12024+67%2014
Sagebrush SparrowPasserellidae12012+0%2011
Golden EagleAccipitridae12024-33%2013
Eastern KingbirdTyrannidae12024-67%2012
Bullock's OrioleIcteridae12015+0%2012
Loggerhead ShrikeLaniidae12024+0%2012
Cliff SwallowHirundinidae12013n/an/a
Long-billed CurlewScolopacidae12014n/an/a
Northern HarrierAccipitridae12018+0%2014
Bald EagleAccipitridae12018+0%2014
Barn SwallowHirundinidae12014n/an/a
Blue-winged TealAnatidae12015n/an/a
Short-eared OwlStrigidae12018+0%2015

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