BirdAnalyst
BBS Route · Wyoming · BCR 10

Leo Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 81 species recorded across 28 survey years, still active.

81Species 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
3Observers

Bird Species Found on Wyoming Leo

Top 40 of 81 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 MeadowlarkIcteridae1202025+18%1995
Vesper SparrowPasserellidae762025-6%1995
Black-billed MagpieCorvidae232025+26%1995
Brewer's BlackbirdIcteridae192025-42%1995
Brewer's SparrowPasserellidae172025-66%1996
Horned LarkAlaudidae162025-48%1995
Barn SwallowHirundinidae132025+55%1996
Green-tailed TowheePasserellidae132025+79%1996
Mourning DoveColumbidae122025-50%1995
Sage ThrasherMimidae112025-31%1996
American White PelicanPelecanidae11200211×1997
Red-winged BlackbirdIcteridae102025+33%1995
Rock WrenTroglodytidae92025-57%1995
American KestrelFalconidae82025+70%1995
American GoldfinchFringillidae62025-15%1997
Wilson's SnipeScolopacidae52025-35%1995
Common RavenCorvidae52025+23%2004
Tree SwallowHirundinidae52025+29%2007
Red CrossbillFringillidae52012n/an/a
American RobinTurdidae42025-76%1995
Lark SparrowPasserellidae42025-83%1996
Song SparrowPasserellidae42025-46%1996
Ring-billed GullLaridae42025+150%2010
Brown-headed CowbirdIcteridae32025-50%2000
Mountain BluebirdTurdidae32025-40%1995
Savannah SparrowPasserellidae32025-17%2000
Wilson's PhalaropeScolopacidae32004+0%1998
Eastern KingbirdTyrannidae22002+100%1982
Yellow WarblerParulidae22025-64%1995
Common NighthawkCaprimulgidae22025+17%1996
Warbling VireoVireonidae22025-67%1996
Northern House WrenTroglodytidae22019+20%1996
Common GrackleIcteridae22000-80%1997
Bank SwallowHirundinidae22025-33%1997
Violet-green SwallowHirundinidae22013+100%1998
Green-winged TealAnatidae22000n/an/a
Swainson's HawkAccipitridae22025+100%2012
Gray PartridgePhasianidae22016n/an/a
KilldeerCharadriidae12017-82%1995
Greater Sage-GrousePhasianidae12025-25%2000

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