BirdAnalyst
BBS Route · Wyoming · BCR 16

Sybille Cyn Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 18 survey years, still active.

96Species 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 →
18Years 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
9Observers

Bird Species Found on Wyoming Sybille Cyn

Top 40 of 96 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
Horned LarkAlaudidae782025-28%1990
Vesper SparrowPasserellidae762025+105%1993
Western MeadowlarkIcteridae752025-19%1990
Ring-necked PheasantPhasianidae501997n/an/a
Green-tailed TowheePasserellidae372025+160%1997
Brewer's BlackbirdIcteridae352025-69%1990
Lark SparrowPasserellidae252025+91%1999
Rock WrenTroglodytidae242025-7%1997
Black-billed MagpieCorvidae202025+529%1993
House FinchFringillidae171993n/an/a
Yellow WarblerParulidae162025+59%1991
American RobinTurdidae152025-44%1990
American CootRallidae142015+250%2014
Mourning DoveColumbidae132025-27%1990
Spotted TowheePasserellidae132025-13%1999
Red-winged BlackbirdIcteridae122025-17%1990
Warbling VireoVireonidae112024+100%2015
Brown-headed CowbirdIcteridae102025+60%1997
American GoldfinchFringillidae102025+56%1993
Common RavenCorvidae102025+300%2005
Sage ThrasherMimidae82025+13%1999
Common NighthawkCaprimulgidae72025-17%1990
Lark BuntingPasserellidae72024-77%1997
Northern House WrenTroglodytidae72025+200%1997
Common GrackleIcteridae6202513×2006
Dusky FlycatcherTyrannidae62014+50%1993
Double-crested CormorantPhalacrocoracidae62013n/an/a
Brewer's SparrowPasserellidae52025-52%1997
MacGillivray's WarblerParulidae51980n/an/a
Song SparrowPasserellidae52025-68%1997
Mountain BluebirdTurdidae52025-59%1991
Loggerhead ShrikeLaniidae52025+160%1999
Yellow-breasted ChatIcteriidae52025-31%2005
SoraRallidae52015+400%2000
GadwallAnatidae52014n/an/a
Red-naped SapsuckerPicidae41980n/an/a
Clark's NutcrackerCorvidae42025-25%1990
European StarlingSturnidae42025+0%1997
Lazuli BuntingCardinalidae42025-14%2012
Say's PhoebeTyrannidae42025+14%2013

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