BirdAnalyst
BBS Route · Wyoming · BCR 17

Thunder Basin Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 58 species recorded across 8 survey years, still active.

58Species 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 →
2011–2025Span
4Observers

Bird Species Found on Wyoming Thunder Basin

Top 40 of 58 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 MeadowlarkIcteridae1412025+16%2013
Lark BuntingPasserellidae1012025-27%2013
Mourning DoveColumbidae332025+79%2013
Horned LarkAlaudidae262025+127%2013
Red-winged BlackbirdIcteridae23202513×2014
Brewer's SparrowPasserellidae232025+15%2014
Common NighthawkCaprimulgidae182025+55%2013
European StarlingSturnidae172025+383%2015
Loggerhead ShrikeLaniidae152025+433%2014
Bullock's OrioleIcteridae92025+233%2014
American AvocetRecurvirostridae92025n/an/a
KilldeerCharadriidae82025+186%2014
Brewer's BlackbirdIcteridae82025+150%2013
Lark SparrowPasserellidae82025-30%2014
American WigeonAnatidae62025n/an/a
Savannah SparrowPasserellidae52011n/an/a
Rock WrenTroglodytidae52025n/an/a
American KestrelFalconidae42025+80%2015
Greater Sage-GrousePhasianidae42018+100%2012
Say's PhoebeTyrannidae42025+33%2014
Brown-headed CowbirdIcteridae42025+33%2015
Western KingbirdTyrannidae32025+17%2013
Eastern KingbirdTyrannidae32025+0%2014
Mountain PloverCharadriidae32013n/an/a
Vesper SparrowPasserellidae32025+100%2015
Cliff SwallowHirundinidae32025+200%2013
Grasshopper SparrowPasserellidae32025+50%2014
Wilson's PhalaropeScolopacidae32025n/an/a
Wilson's SnipeScolopacidae32025n/an/a
Orchard OrioleIcteridae32025n/an/a
Ferruginous HawkAccipitridae22011n/an/a
Prairie FalconFalconidae22025+100%2011
Red-tailed HawkAccipitridae22025+100%2014
Chipping SparrowPasserellidae22018+100%2012
Sage ThrasherMimidae22025+50%2015
Common GrackleIcteridae22025-50%2015
Upland SandpiperScolopacidae22025+0%2024
Northern MockingbirdMimidae22025+100%2024
Burrowing OwlStrigidae22025n/an/a
Common RavenCorvidae22025n/an/a

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