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BBS Route · Wyoming · BCR 10

Leo Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 80 species recorded across 27 survey years, still active.

80Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1982–2022Span
2Observers

Bird Species Found on Wyoming Leo

Top 40 of 80 species by most recent count. Each links to its species trend.

Species recorded on the Leo 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 MeadowlarkIcteridae652022-15%1995
Sagebrush SparrowPasserellidae431982n/an/a
Vesper SparrowPasserellidae262022-38%1995
European StarlingSturnidae162022+33%1995
Horned LarkAlaudidae132022-53%1995
Brewer's SparrowPasserellidae112019-67%1996
American White PelicanPelecanidae11200211×1997
Red-winged BlackbirdIcteridae82022+33%1995
Common RavenCorvidae82022+8%2004
Black-billed MagpieCorvidae72022-44%1995
American KestrelFalconidae52016+20%1995
Common NighthawkCaprimulgidae52019+17%1996
Red CrossbillFringillidae52012n/an/a
American CrowCorvidae42022-37%1995
Sage ThrasherMimidae42022-39%1996
Mourning DoveColumbidae32019-68%1995
American RobinTurdidae32022-76%1995
American GoldfinchFringillidae32019-54%1997
Green-tailed TowheePasserellidae32022+64%1996
Bank SwallowHirundinidae31997n/an/a
Wilson's PhalaropeScolopacidae32004+0%1998
Eastern KingbirdTyrannidae22002+100%1982
Barn SwallowHirundinidae22022-55%1996
Rock WrenTroglodytidae22022-86%1995
Mountain BluebirdTurdidae22019-60%1995
Northern House WrenTroglodytidae22019+20%1996
MallardAnatidae22008+17%2001
Common GrackleIcteridae22000-80%1997
Tree SwallowHirundinidae22017-29%2007
Violet-green SwallowHirundinidae22013+100%1998
Green-winged TealAnatidae22000n/an/a
Gray PartridgePhasianidae22016n/an/a
Wilson's SnipeScolopacidae12019-53%1995
KilldeerCharadriidae12017-82%1995
Greater Sage-GrousePhasianidae12022-25%2000
Northern HarrierAccipitridae12011+0%2004
Red-tailed HawkAccipitridae12022-25%1996
Golden EagleAccipitridae12015-17%1997
Brown-headed CowbirdIcteridae12019-70%2000
Brewer's BlackbirdIcteridae12022-54%1995

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