BirdAnalyst
BBS Route · Wyoming · BCR 16

Sybille Cyn Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 94 species recorded across 17 survey years, still active.

94Species 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 →
17Years 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
9Observers

Bird Species Found on Wyoming Sybille Cyn

Top 40 of 94 species by most recent count. Each links to its species trend.

Species recorded on the Sybille Cyn 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 MeadowlarkIcteridae1022024-3%1990
Vesper SparrowPasserellidae622024+96%1993
Green-tailed TowheePasserellidae552024+289%1997
Ring-necked PheasantPhasianidae501997n/an/a
Horned LarkAlaudidae392024-35%1990
Rock WrenTroglodytidae372024+50%1997
Red-winged BlackbirdIcteridae232024+89%1990
Mourning DoveColumbidae202024-20%1990
Black-billed MagpieCorvidae182024+743%1993
Brewer's SparrowPasserellidae172024-2%1997
House FinchFringillidae171993n/an/a
Lark SparrowPasserellidae152024+44%1999
American CootRallidae142015+250%2014
Yellow WarblerParulidae122024+132%1991
Northern House WrenTroglodytidae122024+233%1997
Warbling VireoVireonidae112024+100%2015
Brewer's BlackbirdIcteridae102024-59%1990
Brown-headed CowbirdIcteridae82024+71%1997
American RobinTurdidae82024-56%1990
Cliff SwallowHirundinidae82022-21%1999
Lark BuntingPasserellidae72024-77%1997
American GoldfinchFringillidae72015+63%1993
Loggerhead ShrikeLaniidae72024+160%1999
Common NighthawkCaprimulgidae62024+11%1990
KilldeerCharadriidae62024-35%1991
Dusky FlycatcherTyrannidae62014+50%1993
Double-crested CormorantPhalacrocoracidae62013n/an/a
Gray CatbirdMimidae62014+500%2013
MacGillivray's WarblerParulidae51980n/an/a
Western Wood-PeweeTyrannidae52024+300%1998
Common RavenCorvidae52024+250%2005
Spotted TowheePasserellidae52024-38%1999
SoraRallidae52015+400%2000
GadwallAnatidae52014n/an/a
Red-naped SapsuckerPicidae41980n/an/a
Savannah SparrowPasserellidae42024+275%1998
Song SparrowPasserellidae42024-39%1997
Sage ThrasherMimidae42024+75%1999
Common GrackleIcteridae4201419×2006
Mountain BluebirdTurdidae32024-59%1991

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