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BBS Route · Wyoming · BCR 10

Arminto Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 61 species recorded across 28 survey years, still active.

61Species 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 →
28Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1982–2025Span
7Observers

Bird Species Found on Wyoming Arminto

Top 40 of 61 species by most recent count. Each links to its species trend.

Species recorded on the Arminto 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 MeadowlarkIcteridae1332025+137%1985
Horned LarkAlaudidae762025-43%1985
Vesper SparrowPasserellidae602025+77%1985
Mourning DoveColumbidae212025+38%1985
Common RavenCorvidae212025+236%2011
Cliff SwallowHirundinidae202025+3%1994
Northern Rough-winged SwallowHirundinidae172004+89%2003
Lark BuntingPasserellidae152025+4%1985
Blue-winged TealAnatidae132004n/an/a
Sage ThrasherMimidae122025-25%1985
Loggerhead ShrikeLaniidae102025+800%1985
Red-winged BlackbirdIcteridae82025+75%2002
Bank SwallowHirundinidae82022+117%2012
Brewer's SparrowPasserellidae72025-39%1985
Northern PintailAnatidae61987n/an/a
Greater Sage-GrousePhasianidae52025+300%2002
Rock WrenTroglodytidae52024+200%1987
Barn SwallowHirundinidae52016-42%1989
Black-billed MagpieCorvidae42025+50%2001
Brewer's BlackbirdIcteridae42025+86%1985
Grasshopper SparrowPasserellidae42024-33%2022
Common NighthawkCaprimulgidae32022+0%1989
Short-eared OwlStrigidae32024+29%2015
Brown-headed CowbirdIcteridae32022+14%2014
KilldeerCharadriidae22025-50%1985
American KestrelFalconidae22019+67%1985
Ferruginous HawkAccipitridae22019+100%1989
Say's PhoebeTyrannidae22024+33%1989
European StarlingSturnidae22024+133%1994
Mountain BluebirdTurdidae22025-56%1988
Lark SparrowPasserellidae22024-44%2001
Violet-green SwallowHirundinidae22011+0%1988
Savannah SparrowPasserellidae22023-86%2002
Green-winged TealAnatidae22004n/an/a
Cinnamon TealAnatidae22004n/an/a
Song SparrowPasserellidae22012n/an/a
GadwallAnatidae22019n/an/a
Swainson's HawkAccipitridae11982n/an/a
American CrowCorvidae12024-73%2009
Golden EagleAccipitridae12025-29%1992

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