BirdAnalyst
BBS Route · Wyoming · BCR 10

Gas Hills 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 37 species recorded across 10 survey years, still active.

37Species 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 →
10Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2013–2024Span
1Observers

Bird Species Found on Wyoming Gas Hills 2

Top 37 of 37 species by most recent count. Each links to its species trend.

Species recorded on the Gas Hills 2 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
Lark BuntingPasserellidae2462024+199%2015
Western MeadowlarkIcteridae752024+45%2015
Horned LarkAlaudidae582024-56%2015
Barn SwallowHirundinidae172024+233%2017
Brewer's BlackbirdIcteridae112023+225%2015
Mourning DoveColumbidae102024-16%2015
Common RavenCorvidae62024-15%2015
KilldeerCharadriidae62024+167%2019
Sage ThrasherMimidae62024+325%2018
Vesper SparrowPasserellidae52024+86%2015
Common NighthawkCaprimulgidae32024-10%2017
Loggerhead ShrikeLaniidae32024-57%2015
Canada GooseAnatidae32015n/an/a
Golden EagleAccipitridae22023+25%2018
Red-winged BlackbirdIcteridae22024-27%2017
Song SparrowPasserellidae22023-93%2015
Brewer's SparrowPasserellidae22024-62%2017
Rock WrenTroglodytidae22015n/an/a
Sandhill CraneGruidae22024n/an/a
Short-eared OwlStrigidae22024n/an/a
American CrowCorvidae12013n/an/a
Grasshopper SparrowPasserellidae12024-69%2017
Lark SparrowPasserellidae12023+400%2015
Sagebrush SparrowPasserellidae12024+8%2015
Green-tailed TowheePasserellidae12013n/an/a
Red-tailed HawkAccipitridae12018+0%2014
Black-billed MagpieCorvidae12024+150%2017
Gray CatbirdMimidae12023-50%2014
American RobinTurdidae12017-75%2014
Burrowing OwlStrigidae12024+0%2017
Bank SwallowHirundinidae12018n/an/a
Greater Sage-GrousePhasianidae12022+0%2019
Swainson's HawkAccipitridae12023+0%2019
Ferruginous HawkAccipitridae12021n/an/a
Say's PhoebeTyrannidae12024+0%2023
Brown-headed CowbirdIcteridae12023n/an/a
Northern HarrierAccipitridae12024n/an/a

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