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BBS Route · Wyoming · BCR 10

Bear Creek Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 56 species recorded across 48 survey years, still active.

56Species 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 →
48Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2025Span
3Observers

Bird Species Found on Wyoming Bear Creek

Top 40 of 56 species by most recent count. Each links to its species trend.

Species recorded on the Bear Creek 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 LarkAlaudidae1992025-2%1970
Brewer's SparrowPasserellidae642025+575%1970
Sage ThrasherMimidae512025+175%1970
Sagebrush SparrowPasserellidae192025+246%1970
Mourning DoveColumbidae132025+271%1972
Barn SwallowHirundinidae102015+450%2000
Vesper SparrowPasserellidae92025-31%1972
Green-tailed TowheePasserellidae82025+600%1996
American CrowCorvidae62016+100%2007
Savannah SparrowPasserellidae52019+150%1980
American RobinTurdidae52025+75%1996
Rock WrenTroglodytidae42025+100%1973
Common RavenCorvidae42024+50%1991
Mountain PloverCharadriidae32024+50%1970
Lark SparrowPasserellidae32015+50%1999
Greater Sage-GrousePhasianidae22025-24%1970
Lark BuntingPasserellidae22024-51%1972
Pine SiskinFringillidae21970n/an/a
MallardAnatidae21982+100%1972
Western MeadowlarkIcteridae22025+33%1975
Golden EagleAccipitridae22022+33%1977
Warbling VireoVireonidae22024+33%2007
Ferruginous HawkAccipitridae12022+0%1981
Say's PhoebeTyrannidae12022-40%1977
Brewer's BlackbirdIcteridae12024-70%1970
KilldeerCharadriidae12024-63%1974
Northern HarrierAccipitridae12025-20%1973
Swainson's HawkAccipitridae12003+0%1969
European StarlingSturnidae11975-67%1969
Red-winged BlackbirdIcteridae12019-67%1972
Loggerhead ShrikeLaniidae12025+25%1972
Short-eared OwlStrigidae11972n/an/a
Black-billed MagpieCorvidae12018-25%1982
American GoldfinchFringillidae12007-50%1972
Mountain BluebirdTurdidae12018+50%1975
Common GrackleIcteridae12008-50%1973
Prairie FalconFalconidae12015+0%1990
Brown-headed CowbirdIcteridae12025-50%1990
American AvocetRecurvirostridae12004-50%1986
Spotted TowheePasserellidae11998+0%1986

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