BirdAnalyst
BBS Route · Wyoming · BCR 10

Shirley Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 65 species recorded across 30 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 →
30Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1980–2025Span
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
Cliff SwallowHirundinidae1052025-20%1990
Horned LarkAlaudidae562025-76%1990
Western MeadowlarkIcteridae452025+104%1990
Thick-billed LongspurCalcariidae422025+73%1997
Sage ThrasherMimidae382025+168%1990
Vesper SparrowPasserellidae362025+123%1990
Lark BuntingPasserellidae252025-43%1990
MallardAnatidae102008+220%1990
Greater Sage-GrousePhasianidae92006+800%1980
American White PelicanPelecanidae92015+800%1989
American RobinTurdidae91992n/an/a
Brewer's SparrowPasserellidae82025-31%1992
Red-winged BlackbirdIcteridae72025+460%1993
Sagebrush SparrowPasserellidae62016-29%1999
Blue-winged TealAnatidae61998+200%1989
Upland SandpiperScolopacidae61990n/an/a
American CrowCorvidae52016+157%2008
Common RavenCorvidae52025+53%2009
Baird's SparrowPasserellidae42002+100%2000
Green-winged TealAnatidae42008n/an/a
Brewer's BlackbirdIcteridae32025-31%1990
GadwallAnatidae32021+20%1999
American WigeonAnatidae32024-25%2003
Mourning DoveColumbidae32025-39%2014
Bank SwallowHirundinidae32011-4%2001
Ferruginous HawkAccipitridae22025+33%1992
Savannah SparrowPasserellidae22000-50%1989
Loggerhead ShrikeLaniidae22025+29%1992
Barn SwallowHirundinidae22025-42%1997
Red-tailed HawkAccipitridae22021-29%2005
Grasshopper SparrowPasserellidae22013+0%1997
American AvocetRecurvirostridae12023+25%2002
KilldeerCharadriidae12025-68%1990
Mountain PloverCharadriidae12022-73%1990
Golden EagleAccipitridae12025+40%1992
Black-billed MagpieCorvidae12025-60%1997
Green-tailed TowheePasserellidae12021+850%1989
Pied-billed GrebePodicipedidae11989n/an/a
California GullLaridae12008+0%1989
RedheadAnatidae11989n/an/a

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