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BBS Route · Wyoming · BCR 10

Shirley Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 65 species recorded across 29 survey years, still active.

65Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1980–2024Span
7Observers

Bird Species Found on Wyoming Shirley

Top 40 of 65 species by most recent count. Each links to its species trend.

Species recorded on the Shirley 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
Thick-billed LongspurCalcariidae652024+47%1997
Horned LarkAlaudidae532024-78%1990
Cliff SwallowHirundinidae502024-14%1990
Western MeadowlarkIcteridae492024+51%1990
Sage ThrasherMimidae402024+124%1990
Brewer's BlackbirdIcteridae182024-36%1990
Vesper SparrowPasserellidae172024+42%1990
Lark BuntingPasserellidae152024-35%1990
Red-winged BlackbirdIcteridae132024+400%1993
MallardAnatidae102008+220%1990
Greater Sage-GrousePhasianidae92006+800%1980
American White PelicanPelecanidae92015+800%1989
Brewer's SparrowPasserellidae92024-35%1992
American RobinTurdidae91992n/an/a
Common RavenCorvidae92024+73%2009
Mourning DoveColumbidae82024-32%2014
Sagebrush SparrowPasserellidae62016-29%1999
Blue-winged TealAnatidae61998+200%1989
Upland SandpiperScolopacidae61990n/an/a
Ferruginous HawkAccipitridae52024+17%1992
American CrowCorvidae52016+157%2008
Baird's SparrowPasserellidae42002+100%2000
Green-winged TealAnatidae42008n/an/a
GadwallAnatidae32021+20%1999
American WigeonAnatidae32024-25%2003
Loggerhead ShrikeLaniidae32022+71%1992
Bank SwallowHirundinidae32011-4%2001
Golden EagleAccipitridae22011+40%1992
Savannah SparrowPasserellidae22000-50%1989
Barn SwallowHirundinidae22016-8%1997
Red-tailed HawkAccipitridae22021-29%2005
Grasshopper SparrowPasserellidae22013+0%1997
Brown-headed CowbirdIcteridae22009+20%2006
American AvocetRecurvirostridae12023+25%2002
KilldeerCharadriidae12024-41%1990
Mountain PloverCharadriidae12022-73%1990
Black-billed MagpieCorvidae12023-50%1997
Green-tailed TowheePasserellidae12021+850%1989
Pied-billed GrebePodicipedidae11989n/an/a
California GullLaridae12008+0%1989

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