BirdAnalyst
BBS Route · Wyoming · BCR 10

Gas Hills 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 38 species recorded across 11 survey years, still active.

38Species 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 →
2013–2025Span
1Observers

Bird Species Found on Wyoming Gas Hills 2

Top 38 of 38 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
Western MeadowlarkIcteridae952025+70%2015
Horned LarkAlaudidae622025-50%2015
Vesper SparrowPasserellidae292025+236%2015
Barn SwallowHirundinidae162025+378%2017
Common RavenCorvidae142025-8%2015
Lark BuntingPasserellidae142025+107%2015
Sage ThrasherMimidae142025+575%2018
Mourning DoveColumbidae52025-4%2015
Brewer's SparrowPasserellidae52025-53%2017
KilldeerCharadriidae42025+267%2019
Common NighthawkCaprimulgidae32025+0%2017
Lark SparrowPasserellidae32025+100%2015
Sagebrush SparrowPasserellidae32025+15%2015
Canada GooseAnatidae32015n/an/a
Golden EagleAccipitridae22023+25%2018
Brewer's BlackbirdIcteridae22025+225%2015
Song SparrowPasserellidae22023-93%2015
Loggerhead ShrikeLaniidae22025-50%2015
Sandhill CraneGruidae22024n/an/a
Short-eared OwlStrigidae22024n/an/a
Common PoorwillCaprimulgidae22025n/an/a
American CrowCorvidae12013n/an/a
Red-winged BlackbirdIcteridae12025-25%2018
Grasshopper SparrowPasserellidae12024-69%2017
Green-tailed TowheePasserellidae12013n/an/a
Red-tailed HawkAccipitridae12018+0%2014
Black-billed MagpieCorvidae12024+150%2017
Gray CatbirdMimidae12023-50%2014
American RobinTurdidae12017-75%2014
Rock WrenTroglodytidae12025-50%2015
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 CowbirdIcteridae12025+0%2023
Northern HarrierAccipitridae12024n/an/a

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